Primality testing 25554^26089-26089^25554 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.03% proof)
25554^26089-26089^25554 is Fermat and Lucas PRP! (929.7359s+0.0038s)

Sieved with xyyxsieve

To be completed...