PFGW Version 20020515.Win_Dev (Beta software, 'caveat utilitor')
Primality testing 31^31835-30 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N-1 test using base 17
Running N-1 test using base 29
Running N+1 test using discriminant 37, base 3+sqrt(37)
Calling N-1 BLS with factored part 0.05% and helper 0.01% (0.16% proof)
31^31835-30 is Fermat and Lucas PRP! (6881.422000 seconds)

To be completed...