Primality testing 25592^27467-27467^25592 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.01% and helper 0.01% (0.03% proof)
25592^27467-27467^25592 is Fermat and Lucas PRP! (971.2156s+0.0038s)

Sieved with xyyxsieve

To be completed...