6!4-1 trivially factors prime!: 11 (digits:2)
 8!4-1 trivially factors prime!: 31 (digits:2)
 12!4-1 trivially factors prime!: 383 (digits:3)
 16!4-1 trivially factors prime!: 6143 (digits:4)
 22!4-1 trivially factors prime!: 665279 (digits:6)
 24!4-1 trivially factors prime!: 2949119 (digits:7)
 
 Primality testing 54!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 29
 Running N+1 test using discriminant 41, base 1+sqrt(41)
 Running N+1 test using discriminant 41, base 2+sqrt(41)
 Calling N+1 BLS with factored part 100.00% and helper 1.64% (303.28% proof)
 54!4-1 is prime! (0.0558s+0.0058s) (digits:19)
 
 Primality testing 56!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 19
 Running N+1 test using discriminant 29, base 1+sqrt(29)
 Running N+1 test using discriminant 29, base 2+sqrt(29)
 Calling N+1 BLS with factored part 100.00% and helper 20.31% (321.88% proof)
 56!4-1 is prime! (0.0611s+0.0020s) (digits:20)
 
 Primality testing 98!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 53
 Running N+1 test using discriminant 67, base 1+sqrt(67)
 Running N+1 test using discriminant 67, base 2+sqrt(67)
 Calling N+1 BLS with factored part 100.00% and helper 0.77% (301.54% proof)
 98!4-1 is prime! (0.0128s+0.0106s) (digits:40)
 
 Primality testing 152!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 43
 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 2.68% (303.57% proof)
 152!4-1 is prime! (0.0084s+0.0060s) (digits:68)
 
 Primality testing 156!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 41
 Running N+1 test using discriminant 47, base 1+sqrt(47)
 Running N+1 test using discriminant 47, base 3+sqrt(47)
 Calling N+1 BLS with factored part 100.00% and helper 7.36% (308.66% proof)
 156!4-1 is prime! (0.0091s+0.0008s) (digits:70)
 
 Primality testing 176!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 47
 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 0.37% (301.12% proof)
 176!4-1 is prime! (0.0109s+0.0008s) (digits:81)
 
 Primality testing 256!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 67
 Running N+1 test using discriminant 73, base 1+sqrt(73)
 Running N+1 test using discriminant 73, base 2+sqrt(73)
 Calling N+1 BLS with factored part 100.00% and helper 0.24% (300.71% proof)
 256!4-1 is prime! (0.0147s+0.0010s) (digits:128)
 
 Primality testing 454!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 251
 Running N+1 test using discriminant 263, base 1+sqrt(263)
 Running N+1 test using discriminant 263, base 2+sqrt(263)
 Calling N+1 BLS with factored part 100.00% and helper 0.12% (300.36% proof)
 454!4-1 is prime! (0.0357s+0.0010s) (digits:254)
 
 Primality testing 460!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 127
 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 0.12% (300.12% proof)
 460!4-1 is prime! (0.0263s+0.0009s) (digits:258)
 
 Primality testing 720!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 181
 Running N+1 test using discriminant 193, base 1+sqrt(193)
 Running N+1 test using discriminant 193, base 2+sqrt(193)
 Calling N+1 BLS with factored part 100.00% and helper 0.62% (300.83% proof)
 720!4-1 is prime! (0.0505s+0.0014s) (digits:438)
 
 Primality testing 750!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 379
 Running N+1 test using discriminant 389, base 1+sqrt(389)
 Running N+1 test using discriminant 389, base 2+sqrt(389)
 Calling N+1 BLS with factored part 100.00% and helper 0.72% (300.79% proof)
 750!4-1 is prime! (0.0752s+0.0012s) (digits:460)
 
 Primality testing 770!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 401
 Running N+1 test using discriminant 431, base 1+sqrt(431)
 Running N+1 test using discriminant 431, base 2+sqrt(431)
 Calling N+1 BLS with factored part 100.00% and helper 0.64% (300.76% proof)
 770!4-1 is prime! (0.0818s+0.0011s) (digits:474)
 
 Primality testing 800!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 211
 Running N+1 test using discriminant 227, base 1+sqrt(227)
 Running N+1 test using discriminant 227, base 3+sqrt(227)
 Calling N+1 BLS with factored part 100.00% and helper 0.06% (300.12% proof)
 800!4-1 is prime! (0.0698s+0.0009s) (digits:496)
 
 Primality testing 1442!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 727
 Running N+1 test using discriminant 743, base 1+sqrt(743)
 Running N+1 test using discriminant 743, base 2+sqrt(743)
 Calling N+1 BLS with factored part 100.00% and helper 0.34% (300.40% proof)
 1442!4-1 is prime! (0.2431s+0.0011s) (digits:984)
 
 Primality testing 2846!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 1429
 Running N+1 test using discriminant 1439, base 1+sqrt(1439)
 Running N+1 test using discriminant 1439, base 2+sqrt(1439)
 Calling N+1 BLS with factored part 100.00% and helper 0.01% (300.01% proof)
 2846!4-1 is prime! (1.1559s+0.0013s) (digits:2151)
 
 Primality testing 5920!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 1483
 Running N+1 test using discriminant 1499, base 1+sqrt(1499)
 Running N+1 test using discriminant 1499, base 2+sqrt(1499)
 Calling N+1 BLS with factored part 100.00% and helper 0.09% (300.10% proof)
 5920!4-1 is prime! (5.1031s+0.0018s) (digits:4943)
 
 Primality testing 7066!4-1 [N-1/N+1, Brillhart-Lehmer-Selfridge]
 Running N-1 test using base 3539
 Running N+1 test using discriminant 3547, base 1+sqrt(3547)
 Running N+1 test using discriminant 3547, base 2+sqrt(3547)
 Calling N+1 BLS with factored part 100.00% and helper 0.00% (300.00% proof)
 7066!4-1 is prime! (7.7968s+0.0039s) (digits:6035)