Primality testing 31730^33787-33787^31730 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 6+sqrt(7)
Calling N-1 BLS with factored part 0.00% and helper 0.00% (0.01% proof)
31730^33787-33787^31730 is Fermat and Lucas PRP! (1081.1178s+0.0031s)

Sieved with xyyxsieve

To be completed...