Primality testing 31959^34564-34564^31959 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 1+sqrt(7)
Calling N+1 BLS with factored part 0.00% and helper 0.00% (0.01% proof)
31959^34564-34564^31959 is Fermat and Lucas PRP! (1080.7785s+0.0032s)

Sieved with xyyxsieve

To be completed...