Primality testing 31050^35207-35207^31050 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N-1 test using base 11
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.00% and helper 0.00% (0.01% proof)
31050^35207-35207^31050 is Fermat and Lucas PRP! (1353.9201s+0.0039s)

Sieved with xyyxsieve

To be completed...