18!15-1 trivially factors prime!: 53 (digits:2)
 30!15-1 trivially factors prime!: 449 (digits:3)
 32!15-1 trivially factors prime!: 1087 (digits:4)
 35!15-1 trivially factors prime!: 3499 (digits:4)
 38!15-1 trivially factors prime!: 6991 (digits:4)
 39!15-1 trivially factors prime!: 8423 (digits:4)
 44!15-1 trivially factors prime!: 17863 (digits:5)
 45!15-1 trivially factors prime!: 20249 (digits:5)
 63!15-1 trivially factors prime!: 5388767 (digits:7)
 90!15-1 trivially factors prime!: 8201249999 (digits:10)
 
 Primality testing 92!15-1 [N-1, Brillhart-Lehmer-Selfridge]
 small number, factored prime!
 92!15-1 is prime! (0.0497s+0.0012s) (digits:11)
 
 Primality testing 123!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 17, base 1+sqrt(17)
 Running N+1 test using discriminant 17, base 2+sqrt(17)
 Calling N+1 BLS with factored part 100.00% and helper 2.08% (306.25% proof)
 123!15-1 is prime! (0.0401s+0.0062s) (digits:15)
 
 Primality testing 158!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 29
 Running N-1 test using base 31
 Running N+1 test using discriminant 43, base 3+sqrt(43)
 Running N+1 test using discriminant 43, base 5+sqrt(43)
 Calling N+1 BLS with factored part 100.00% and helper 18.46% (321.54% proof)
 158!15-1 is prime! (0.0820s+0.0015s) (digits:20)
 
 Primality testing 224!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 31, base 1+sqrt(31)
 Running N+1 test using discriminant 31, base 3+sqrt(31)
 Calling N+1 BLS with factored part 100.00% and helper 11.22% (312.24% proof)
 224!15-1 is prime! (0.0301s+0.0079s) (digits:30)
 
 Primality testing 378!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 47, base 1+sqrt(47)
 Running N+1 test using discriminant 47, base 2+sqrt(47)
 Calling N+1 BLS with factored part 100.00% and helper 4.37% (306.01% proof)
 378!15-1 is prime! (0.0124s+0.0029s) (digits:56)
 
 Primality testing 405!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 31
 Running N+1 test using discriminant 41, base 1+sqrt(41)
 Running N+1 test using discriminant 41, base 3+sqrt(41)
 Calling N+1 BLS with factored part 100.00% and helper 14.14% (315.15% proof)
 405!15-1 is prime! (0.0086s+0.0010s) (digits:60)
 
 Primality testing 482!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 89
 Running N-1 test using base 103
 Running N+1 test using discriminant 139, base 3+sqrt(139)
 Running N+1 test using discriminant 139, base 7+sqrt(139)
 Calling N+1 BLS with factored part 100.00% and helper 10.66% (311.07% proof)
 482!15-1 is prime! (0.0145s+0.0011s) (digits:74)
 
 Primality testing 485!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 59, base 1+sqrt(59)
 Running N+1 test using discriminant 59, base 2+sqrt(59)
 Calling N+1 BLS with factored part 100.00% and helper 3.66% (304.88% proof)
 485!15-1 is prime! (0.0146s+0.0386s) (digits:75)
 
 Primality testing 573!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 67
 Running N+1 test using discriminant 79, base 1+sqrt(79)
 Running N+1 test using discriminant 79, base 2+sqrt(79)
 Calling N+1 BLS with factored part 100.00% and helper 5.02% (305.69% proof)
 573!15-1 is prime! (0.0139s+0.0016s) (digits:91)
 
 Primality testing 669!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 107, base 1+sqrt(107)
 Running N+1 test using discriminant 107, base 2+sqrt(107)
 Calling N+1 BLS with factored part 100.00% and helper 0.28% (300.28% proof)
 669!15-1 is prime! (0.0563s+0.0029s) (digits:109)
 
 Primality testing 909!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 97, base 1+sqrt(97)
 Running N+1 test using discriminant 97, base 2+sqrt(97)
 Calling N+1 BLS with factored part 100.00% and helper 0.19% (300.39% proof)
 909!15-1 is prime! (0.0216s+0.0011s) (digits:155)
 
 Primality testing 933!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 79
 Running N-1 test using base 107
 Running N-1 test using base 127
 Running N+1 test using discriminant 139, base 1+sqrt(139)
 Running N+1 test using discriminant 139, base 2+sqrt(139)
 Calling N+1 BLS with factored part 100.00% and helper 5.48% (305.48% proof)
 933!15-1 is prime! (0.0208s+0.0009s) (digits:160)
 
 Primality testing 1022!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 127
 Running N+1 test using discriminant 149, base 1+sqrt(149)
 Running N+1 test using discriminant 149, base 2+sqrt(149)
 Calling N+1 BLS with factored part 100.00% and helper 2.73% (303.07% proof)
 1022!15-1 is prime! (0.0328s+0.0010s) (digits:177)
 
 Primality testing 1175!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 173, base 1+sqrt(173)
 Running N+1 test using discriminant 173, base 2+sqrt(173)
 Calling N+1 BLS with factored part 100.00% and helper 0.29% (300.58% proof)
 1175!15-1 is prime! (0.0279s+0.0011s) (digits:209)
 
 Primality testing 1484!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 151, base 3+sqrt(151)
 Running N+1 test using discriminant 151, base 4+sqrt(151)
 Calling N+1 BLS with factored part 100.00% and helper 1.11% (301.22% proof)
 1484!15-1 is prime! (0.0482s+0.0013s) (digits:273)
 
 Primality testing 1565!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 167, base 1+sqrt(167)
 Running N+1 test using discriminant 167, base 2+sqrt(167)
 Calling N+1 BLS with factored part 100.00% and helper 0.21% (300.42% proof)
 1565!15-1 is prime! (0.0408s+0.0012s) (digits:290)
 
 Primality testing 1569!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 137, base 1+sqrt(137)
 Running N+1 test using discriminant 137, base 2+sqrt(137)
 Calling N+1 BLS with factored part 100.00% and helper 1.87% (301.97% proof)
 1569!15-1 is prime! (0.0436s+0.0010s) (digits:291)
 
 Primality testing 1595!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 173, base 1+sqrt(173)
 Running N+1 test using discriminant 173, base 2+sqrt(173)
 Calling N+1 BLS with factored part 100.00% and helper 0.20% (300.41% proof)
 1595!15-1 is prime! (0.0439s+0.0013s) (digits:297)
 
 Primality testing 1748!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 127, base 1+sqrt(127)
 Running N+1 test using discriminant 127, base 3+sqrt(127)
 Calling N+1 BLS with factored part 100.00% and helper 1.01% (301.28% proof)
 1748!15-1 is prime! (0.0647s+0.0011s) (digits:330)
 
 Primality testing 1920!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 131
 Running N+1 test using discriminant 151, base 1+sqrt(151)
 Running N+1 test using discriminant 151, base 2+sqrt(151)
 Calling N+1 BLS with factored part 100.00% and helper 0.08% (300.08% proof)
 1920!15-1 is prime! (0.0366s+0.0012s) (digits:367)
 
 Primality testing 2045!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 233
 Running N+1 test using discriminant 251, base 1+sqrt(251)
 Running N+1 test using discriminant 251, base 2+sqrt(251)
 Calling N+1 BLS with factored part 100.00% and helper 1.68% (301.83% proof)
 2045!15-1 is prime! (0.0567s+0.0009s) (digits:394)
 
 Primality testing 2409!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 271, base 2+sqrt(271)
 Running N+1 test using discriminant 271, base 3+sqrt(271)
 Calling N+1 BLS with factored part 100.00% and helper 0.06% (300.13% proof)
 2409!15-1 is prime! (0.0810s+0.0012s) (digits:476)
 
 Primality testing 3098!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 281, base 1+sqrt(281)
 Running N+1 test using discriminant 281, base 2+sqrt(281)
 Calling N+1 BLS with factored part 97.24% and helper 0.19% (292.06% proof)
 3098!15-1 is prime! (0.2326s+0.0009s) (digits:634)
 
 Primality testing 3254!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 349, base 2+sqrt(349)
 Running N+1 test using discriminant 349, base 4+sqrt(349)
 Calling N+1 BLS with factored part 98.43% and helper 0.09% (295.46% proof)
 3254!15-1 is prime! (0.2019s+0.0011s) (digits:670)
 
 Primality testing 4652!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 433, base 3+sqrt(433)
 Running N+1 test using discriminant 433, base 6+sqrt(433)
 Calling N+1 BLS with factored part 100.00% and helper 0.12% (300.12% proof)
 4652!15-1 is prime! (0.3963s+0.0011s) (digits:1005)
 
 Primality testing 5022!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 521, base 2+sqrt(521)
 Running N+1 test using discriminant 521, base 3+sqrt(521)
 Calling N+1 BLS with factored part 100.00% and helper 0.03% (300.03% proof)
 5022!15-1 is prime! (0.3576s+0.0013s) (digits:1096)
 
 Primality testing 5052!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 431
 Running N+1 test using discriminant 461, base 1+sqrt(461)
 Running N+1 test using discriminant 461, base 2+sqrt(461)
 Calling N+1 BLS with factored part 100.00% and helper 0.08% (300.14% proof)
 5052!15-1 is prime! (0.3635s+0.0012s) (digits:1103)
 
 Primality testing 5442!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 541, base 2+sqrt(541)
 Running N+1 test using discriminant 541, base 3+sqrt(541)
 Calling N+1 BLS with factored part 100.00% and helper 0.03% (300.03% proof)
 5442!15-1 is prime! (0.3806s+0.0009s) (digits:1200)
 
 Primality testing 5529!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 547, base 1+sqrt(547)
 Running N+1 test using discriminant 547, base 2+sqrt(547)
 Calling N+1 BLS with factored part 100.00% and helper 0.02% (300.05% proof)
 5529!15-1 is prime! (0.4129s+0.0010s) (digits:1222)
 
 Primality testing 5792!15-1 [N-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 discriminant 433, base 3+sqrt(433)
 Running N+1 test using discriminant 433, base 6+sqrt(433)
 Calling N+1 BLS with factored part 100.00% and helper 0.28% (300.33% proof)
 5792!15-1 is prime! (0.7325s+0.0013s) (digits:1288)
 
 Primality testing 6575!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 659, base 1+sqrt(659)
 Running N+1 test using discriminant 659, base 2+sqrt(659)
 Calling N+1 BLS with factored part 100.00% and helper 0.04% (300.08% proof)
 6575!15-1 is prime! (0.5663s+0.0012s) (digits:1486)
 
 Primality testing 11495!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 1163
 Running N+1 test using discriminant 1181, base 1+sqrt(1181)
 Running N+1 test using discriminant 1181, base 2+sqrt(1181)
 Calling N+1 BLS with factored part 100.00% and helper 0.02% (300.04% proof)
 11495!15-1 is prime! (2.2056s+0.0014s) (digits:2782)
 
 Primality testing 13514!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 991, base 3+sqrt(991)
 Running N+1 test using discriminant 991, base 8+sqrt(991)
 Calling N+1 BLS with factored part 100.00% and helper 0.14% (300.14% proof)
 13514!15-1 is prime! (5.7644s+0.0013s) (digits:3333)
 
 Primality testing 14918!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N-1 test using base 1117
 Running N+1 test using discriminant 1151, base 1+sqrt(1151)
 Running N+1 test using discriminant 1151, base 2+sqrt(1151)
 Calling N+1 BLS with factored part 100.00% and helper 0.13% (300.15% proof)
 14918!15-1 is prime! (5.9891s+0.0013s) (digits:3722)
 
 Primality testing 15330!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 1031
 Running N+1 test using discriminant 1039, base 1+sqrt(1039)
 Running N+1 test using discriminant 1039, base 2+sqrt(1039)
 Calling N+1 BLS with factored part 100.00% and helper 0.20% (300.21% proof)
 15330!15-1 is prime! (2.5022s+0.0012s) (digits:3836)
 
 Primality testing 15582!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 1301, base 1+sqrt(1301)
 Running N+1 test using discriminant 1301, base 2+sqrt(1301)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.01% proof)
 15582!15-1 is prime! (4.1190s+0.0017s) (digits:3907)
 
 Primality testing 15870!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 1061
 Running N+1 test using discriminant 1091, base 1+sqrt(1091)
 Running N+1 test using discriminant 1091, base 2+sqrt(1091)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.01% proof)
 15870!15-1 is prime! (2.6267s+0.0018s) (digits:3987)
 
 Primality testing 16347!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 1511, base 2+sqrt(1511)
 Running N+1 test using discriminant 1511, base 3+sqrt(1511)
 Calling N+1 BLS with factored part 100.00% and helper 0.10% (300.11% proof)
 16347!15-1 is prime! (6.0815s+0.0013s) (digits:4121)
 
 Primality testing 17384!15-1 [N-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 discriminant 1321, base 1+sqrt(1321)
 Running N+1 test using discriminant 1321, base 3+sqrt(1321)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.03% proof)
 17384!15-1 is prime! (9.1408s+0.0016s) (digits:4413)
 
 Primality testing 22359!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 1877, base 1+sqrt(1877)
 Running N+1 test using discriminant 1877, base 2+sqrt(1877)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.01% proof)
 22359!15-1 is prime! (10.6153s+0.0023s) (digits:5839)
 
 Primality testing 23405!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 2357, base 1+sqrt(2357)
 Running N+1 test using discriminant 2357, base 2+sqrt(2357)
 Calling N+1 BLS with factored part 100.00% and helper 0.07% (300.08% proof)
 23405!15-1 is prime! (10.3268s+0.0017s) (digits:6143)
 
 Primality testing 28205!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 2843, base 1+sqrt(2843)
 Running N+1 test using discriminant 2843, base 2+sqrt(2843)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.01% proof)
 28205!15-1 is prime! (15.7409s+0.0030s) (digits:7554)
 
 Primality testing 28484!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3
 Running N+1 test using discriminant 2131, base 1+sqrt(2131)
 Running N+1 test using discriminant 2131, base 3+sqrt(2131)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.02% proof)
 28484!15-1 is prime! (24.4868s+0.0021s) (digits:7637)
 
 Primality testing 32649!15-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 5
 Running N+1 test using discriminant 2767, base 1+sqrt(2767)
 Running N+1 test using discriminant 2767, base 2+sqrt(2767)
 Calling N+1 BLS with factored part 100.00% and helper 0.00% (300.00% proof)
 32649!15-1 is prime! (22.7831s+0.0028s) (digits:8882)