1st PRP for 2^n-484691.

Sieved to P=200G.

Primality testing 2^86782-484691 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 19
Running N+1 test using discriminant 31, base 1+sqrt(31)
Running N+1 test using discriminant 31, base 2+sqrt(31)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.04% proof)
2^86782-484691 is Fermat and Lucas PRP! (721.3102s+0.0075s)

To be completed...