Verified Fermat and Lucas PRP by pfgw.

Primality testing 81^p(8436)-80^p(8436) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 11
Running N+1 test using discriminant 17, base 16+sqrt(17)
Calling N-1 BLS with factored part 0.02% and helper 0.01% (0.05% proof)
81^p(8436)-80^p(8436) is Fermat and Lucas PRP! (9614.0624s+0.0333s)

To be completed...