Primality testing 27069^28754-28754^27069 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 19, base 2+sqrt(19)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
27069^28754-28754^27069 is Fermat and Lucas PRP! (626.2584s+0.0031s)

Sieved with xyyxsieve

To be completed...