1st PRP for 31^n-92028
Sieved to P=10G
Primality testing 31^9563-92028 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 3
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 1+sqrt(11)
Calling N-1 BLS with factored part 0.05% and helper 0.04% (0.20% proof)
31^9563-92028 is Fermat and Lucas PRP! (84.4377s+0.0016s)
To be completed...