20!15+1 trivially factors prime!: 101 (digits:3) 21!15+1 trivially factors prime!: 127 (digits:3) 25!15+1 trivially factors prime!: 251 (digits:3) 33!15+1 trivially factors prime!: 1783 (digits:4) 46!15+1 trivially factors prime!: 22817 (digits:5) 47!15+1 trivially factors prime!: 51137 (digits:5) 56!15+1 trivially factors prime!: 656657 (digits:6) 63!15+1 trivially factors prime!: 5388769 (digits:7) 70!15+1 trivially factors prime!: 38500001 (digits:8) 84!15+1 trivially factors prime!: 2636577217 (digits:10) 89!15+1 trivially factors prime!: 6941485937 (digits:10) 91!15+1 trivially factors prime!: 9625522817 (digits:10) Primality testing 103!15+1 [N-1, Brillhart-Lehmer-Selfridge] small number, factored prime! 103!15+1 is prime! (0.0177s+0.0010s) (digits:12) Primality testing 111!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 13 Running N-1 test using base 29 Calling Brillhart-Lehmer-Selfridge with factored part 44.19% 111!15+1 is prime! (0.0060s+0.0008s) (digits:14) Primality testing 112!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 45.45% 112!15+1 is prime! (0.0046s+0.0008s) (digits:14) Primality testing 114!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 43.18% 114!15+1 is prime! (0.0047s+0.0015s) (digits:14) Primality testing 136!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 43.40% 136!15+1 is prime! (0.0049s+0.0012s) (digits:17) Primality testing 141!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 40.35% 141!15+1 is prime! (0.0045s+0.0007s) (digits:18) Primality testing 145!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 19 Calling Brillhart-Lehmer-Selfridge with factored part 45.76% 145!15+1 is prime! (0.0056s+0.0016s) (digits:18) Primality testing 156!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 39.06% 156!15+1 is prime! (0.0051s+0.0014s) (digits:20) Primality testing 162!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 23 Calling Brillhart-Lehmer-Selfridge with factored part 41.79% 162!15+1 is prime! (0.0049s+0.0009s) (digits:21) Primality testing 186!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 37.97% 186!15+1 is prime! (0.0189s+0.0079s) (digits:25) Primality testing 192!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 37 Calling Brillhart-Lehmer-Selfridge with factored part 37.80% 192!15+1 is prime! (0.0336s+0.0014s) (digits:25) Primality testing 206!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 38.20% 206!15+1 is prime! (0.0292s+0.0010s) (digits:28) Primality testing 226!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 38.38% 226!15+1 is prime! (0.0384s+0.0108s) (digits:30) Primality testing 230!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 45.10% 230!15+1 is prime! (0.0269s+0.0011s) (digits:31) Primality testing 233!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 39.42% 233!15+1 is prime! (0.0150s+0.0150s) (digits:32) Primality testing 239!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 36.79% 239!15+1 is prime! (0.0273s+0.0016s) (digits:33) Primality testing 252!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 36.28% 252!15+1 is prime! (0.0253s+0.0016s) (digits:35) Primality testing 299!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 36.23% 299!15+1 is prime! (0.0325s+0.0086s) (digits:42) Primality testing 347!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 35.54% 347!15+1 is prime! (0.0210s+0.0082s) (digits:50) Primality testing 367!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 35.03% 367!15+1 is prime! (0.0273s+0.0047s) (digits:54) Primality testing 390!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 31 Calling Brillhart-Lehmer-Selfridge with factored part 39.15% 390!15+1 is prime! (0.0269s+0.0098s) (digits:58) Primality testing 403!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.52% 403!15+1 is prime! (0.0307s+0.0013s) (digits:60) Primality testing 421!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 37.20% 421!15+1 is prime! (0.0408s+0.0032s) (digits:63) Primality testing 432!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 71 Calling Brillhart-Lehmer-Selfridge with factored part 46.73% 432!15+1 is prime! (0.0346s+0.0029s) (digits:65) Primality testing 460!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 67 Calling Brillhart-Lehmer-Selfridge with factored part 38.10% 460!15+1 is prime! (0.0426s+0.0028s) (digits:70) Primality testing 476!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.85% 476!15+1 is prime! (0.0182s+0.0105s) (digits:73) Primality testing 479!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.88% 479!15+1 is prime! (0.0261s+0.0112s) (digits:73) Primality testing 509!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 61 Calling Brillhart-Lehmer-Selfridge with factored part 36.54% 509!15+1 is prime! (0.0626s+0.0033s) (digits:79) Primality testing 530!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 71 Calling Brillhart-Lehmer-Selfridge with factored part 38.10% 530!15+1 is prime! (0.0382s+0.0044s) (digits:83) Primality testing 571!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 67 Calling Brillhart-Lehmer-Selfridge with factored part 35.35% 571!15+1 is prime! (0.0551s+0.0016s) (digits:90) Primality testing 582!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 73 Running N-1 test using base 83 Calling Brillhart-Lehmer-Selfridge with factored part 43.42% 582!15+1 is prime! (0.0319s+0.0104s) (digits:92) Primality testing 607!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.06% 607!15+1 is prime! (0.0260s+0.0046s) (digits:97) Primality testing 633!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 59 Calling Brillhart-Lehmer-Selfridge with factored part 41.37% 633!15+1 is prime! (0.0392s+0.0013s) (digits:102) Primality testing 778!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.19% 778!15+1 is prime! (0.0073s+0.0014s) (digits:129) Primality testing 859!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 35.83% 859!15+1 is prime! (0.0051s+0.0012s) (digits:145) Primality testing 919!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 35.96% 919!15+1 is prime! (0.0083s+0.0013s) (digits:157) Primality testing 954!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 39.96% 954!15+1 is prime! (0.0113s+0.0014s) (digits:164) Primality testing 981!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 83 Calling Brillhart-Lehmer-Selfridge with factored part 39.22% 981!15+1 is prime! (0.0075s+0.0015s) (digits:169) Primality testing 989!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 109 Running N-1 test using base 139 Calling Brillhart-Lehmer-Selfridge with factored part 33.81% 989!15+1 is prime! (0.0161s+0.0019s) (digits:171) Primality testing 996!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 39.23% 996!15+1 is prime! (0.0088s+0.0013s) (digits:172) Primality testing 997!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.68% 997!15+1 is prime! (0.0065s+0.0022s) (digits:173) Primality testing 1079!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.76% 1079!15+1 is prime! (0.0093s+0.0015s) (digits:189) Primality testing 1130!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 137 Calling Brillhart-Lehmer-Selfridge with factored part 44.24% 1130!15+1 is prime! (0.0126s+0.0013s) (digits:199) Primality testing 1193!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.00% 1193!15+1 is prime! (0.0096s+0.0015s) (digits:212) Primality testing 1197!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 38.44% 1197!15+1 is prime! (0.0075s+0.0016s) (digits:213) Primality testing 1410!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 107 Calling Brillhart-Lehmer-Selfridge with factored part 57.16% 1410!15+1 is prime! (0.0060s+0.0014s) (digits:257) Primality testing 1426!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.88% 1426!15+1 is prime! (0.0101s+0.0014s) (digits:260) Primality testing 1430!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 43.25% 1430!15+1 is prime! (0.0069s+0.0019s) (digits:262) Primality testing 1671!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 163 Running N-1 test using base 173 Calling Brillhart-Lehmer-Selfridge with factored part 36.35% 1671!15+1 is prime! (0.0145s+0.0014s) (digits:313) Primality testing 1790!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 191 Running N-1 test using base 227 Calling Brillhart-Lehmer-Selfridge with factored part 41.76% 1790!15+1 is prime! (0.0142s+0.0011s) (digits:339) Primality testing 1796!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.34% 1796!15+1 is prime! (0.0085s+0.0014s) (digits:340) Primality testing 1917!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 181 Calling Brillhart-Lehmer-Selfridge with factored part 35.50% 1917!15+1 is prime! (0.0121s+0.0012s) (digits:366) Primality testing 1993!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.36% 1993!15+1 is prime! (0.0097s+0.0012s) (digits:383) Primality testing 2053!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 167 Calling Brillhart-Lehmer-Selfridge with factored part 34.35% 2053!15+1 is prime! (0.0131s+0.0014s) (digits:396) Primality testing 2355!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 163 Running N-1 test using base 167 Running N-1 test using base 179 Running N-1 test using base 181 Calling Brillhart-Lehmer-Selfridge with factored part 53.35% 2355!15+1 is prime! (0.0226s+0.0015s) (digits:463) Primality testing 2544!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.29% 2544!15+1 is prime! (0.0100s+0.0011s) (digits:506) Primality testing 2840!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 347 Calling Brillhart-Lehmer-Selfridge with factored part 38.85% 2840!15+1 is prime! (0.0192s+0.0011s) (digits:574) Primality testing 2906!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.50% 2906!15+1 is prime! (0.0128s+0.0015s) (digits:589) Primality testing 2983!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.47% 2983!15+1 is prime! (0.0205s+0.0011s) (digits:607) Primality testing 3493!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 257 Calling Brillhart-Lehmer-Selfridge with factored part 34.07% 3493!15+1 is prime! (0.0338s+0.0013s) (digits:726) Primality testing 3576!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 37.00% 3576!15+1 is prime! (0.0160s+0.0009s) (digits:746) Primality testing 4501!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.86% 4501!15+1 is prime! (0.0382s+0.0011s) (digits:968) Primality testing 4551!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 35.91% 4551!15+1 is prime! (0.0192s+0.0013s) (digits:981) Primality testing 4704!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 467 Calling Brillhart-Lehmer-Selfridge with factored part 35.84% 4704!15+1 is prime! (0.0401s+0.0012s) (digits:1018) Primality testing 5249!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 421 Calling Brillhart-Lehmer-Selfridge with factored part 33.36% 5249!15+1 is prime! (0.0852s+0.0013s) (digits:1152) Primality testing 5595!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 379 Running N-1 test using base 389 Running N-1 test using base 397 Running N-1 test using base 401 Calling Brillhart-Lehmer-Selfridge with factored part 47.58% 5595!15+1 is prime! (0.1331s+0.0012s) (digits:1238) Primality testing 6325!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 643 Running N-1 test using base 661 Calling Brillhart-Lehmer-Selfridge with factored part 34.88% 6325!15+1 is prime! (0.1132s+0.0010s) (digits:1422) Primality testing 7023!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 599 Running N-1 test using base 619 Calling Brillhart-Lehmer-Selfridge with factored part 33.82% 7023!15+1 is prime! (0.1041s+0.0012s) (digits:1600) Primality testing 7138!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 34.02% 7138!15+1 is prime! (0.0521s+0.0012s) (digits:1629) Primality testing 7970!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.81% 7970!15+1 is prime! (0.0603s+0.0013s) (digits:1845) Primality testing 8630!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.50% 8630!15+1 is prime! (0.0589s+0.0011s) (digits:2017) Primality testing 9620!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 1013 Running N-1 test using base 1019 Calling Brillhart-Lehmer-Selfridge with factored part 37.06% 9620!15+1 is prime! (0.2853s+0.0012s) (digits:2279) Primality testing 10619!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.87% 10619!15+1 is prime! (0.2283s+0.0011s) (digits:2545) Primality testing 11886!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.68% 11886!15+1 is prime! (0.1286s+0.0012s) (digits:2888) Primality testing 12070!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 36.02% 12070!15+1 is prime! (0.1342s+0.0012s) (digits:2938) Primality testing 12349!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.96% 12349!15+1 is prime! (0.1520s+0.0014s) (digits:3014) Primality testing 12885!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 877 Calling Brillhart-Lehmer-Selfridge with factored part 43.10% 12885!15+1 is prime! (0.2083s+0.0015s) (digits:3160) Primality testing 14392!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.63% 14392!15+1 is prime! (0.3685s+0.0017s) (digits:3576) Primality testing 15166!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 1229 Calling Brillhart-Lehmer-Selfridge with factored part 33.80% 15166!15+1 is prime! (0.7563s+0.0013s) (digits:3790) Primality testing 15193!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.37% 15193!15+1 is prime! (0.2483s+0.0014s) (digits:3798) Primality testing 15206!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.86% 15206!15+1 is prime! (0.4206s+0.0013s) (digits:3802) Primality testing 15290!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 35.10% 15290!15+1 is prime! (0.2037s+0.0013s) (digits:3825) Primality testing 15855!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 1061 Running N-1 test using base 1063 Calling Brillhart-Lehmer-Selfridge with factored part 42.11% 15855!15+1 is prime! (0.6334s+0.0017s) (digits:3983) Primality testing 16489!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.52% 16489!15+1 is prime! (0.5453s+0.0017s) (digits:4161) Primality testing 17346!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 1453 Calling Brillhart-Lehmer-Selfridge with factored part 35.61% 17346!15+1 is prime! (0.7163s+0.0015s) (digits:4403) Primality testing 20604!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Running N-1 test using base 1787 Calling Brillhart-Lehmer-Selfridge with factored part 34.87% 20604!15+1 is prime! (1.1742s+0.0015s) (digits:5332) Primality testing 21331!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 33.79% 21331!15+1 is prime! (1.0821s+0.0018s) (digits:5541) Primality testing 21925!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Calling Brillhart-Lehmer-Selfridge with factored part 33.66% 21925!15+1 is prime! (0.5017s+0.0016s) (digits:5713) Primality testing 23356!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 5 Running N-1 test using base 1867 Calling Brillhart-Lehmer-Selfridge with factored part 33.45% 23356!15+1 is prime! (2.0399s+0.0025s) (digits:6128) Primality testing 28422!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 2441 Calling Brillhart-Lehmer-Selfridge with factored part 33.68% 28422!15+1 is prime! (1.3198s+0.0033s) (digits:7619) Primality testing 28570!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 3 Running N-1 test using base 2917 Calling Brillhart-Lehmer-Selfridge with factored part 35.30% 28570!15+1 is prime! (2.2004s+0.0022s) (digits:7663) Primality testing 33777!15+1 [N-1, Brillhart-Lehmer-Selfridge] Running N-1 test using base 5 Calling Brillhart-Lehmer-Selfridge with factored part 34.92% 33777!15+1 is prime! (1.2705s+0.0027s) (digits:9222)