Primality testing 25771^29408-29408^25771 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 23, base 8+sqrt(23)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.03% proof)
25771^29408-29408^25771 is Fermat and Lucas PRP! (1182.3921s+0.0030s)

Sieved with xyyxsieve

To be completed...