PFGW Version 20020515.Win_Dev (Beta software, 'caveat utilitor')
Primality testing 31^14891-30 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 17, base 14+sqrt(17)
Calling N-1 BLS with factored part 0.22% and helper 0.02% (0.67% proof)
31^14891-30 is Fermat and Lucas PRP! (880.250000 seconds)

To be completed...