Primality testing 27140^30699-30699^27140 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 11
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N+1 BLS with factored part 0.00% and helper 0.00% (0.02% proof)
27140^30699-30699^27140 is Fermat and Lucas PRP! (884.7187s+0.0034s)

Sieved with xyyxsieve

To be completed...