Primality testing 70^35391-35391^70 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 11
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N-1 BLS with factored part 0.01% and helper 0.01% (0.03% proof)
70^35391-35391^70 is Fermat and Lucas PRP! (206.0923s+0.0011s)

Sieved with xyyxsieve

To be completed...