Primality testing 26253^37424-37424^26253 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 1+sqrt(11)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
26253^37424-37424^26253 is Fermat and Lucas PRP! (2150.8709s+0.0047s)

Sieved with xyyxsieve

To be completed...