1st PRP for 31^n-57018

Sieved to P=10G

Primality testing 31^7790-57018 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 29, base 1+sqrt(29)
Calling N+1 BLS with factored part 0.08% and helper 0.04% (0.29% proof)
31^7790-57018 is Fermat and Lucas PRP! (37.1943s+0.0015s)

To be completed...