Primality testing (74968^17107-1)/74967 [N-1, Brillhart-Lehmer-Selfridge]                                    
Running N-1 test using base 5                                    
Calling Brillhart-Lehmer-Selfridge with factored part 33.33%                                    
(74968^17107-1)/74967 is prime! (126.1544s+0.0004s)