PFGW:
Primality testing 8^99702+7^(99702-1) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 29, base 2+sqrt(29)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.03% proof)
8^99702+7^(99702-1) is Fermat and Lucas PRP! (2946.8797s+0.0063s)

To be completed...