1st PRP for 2^n-112949.

Sieved to P=200G.

Primality testing 2^63756-112949 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 71
Running N+1 test using discriminant 89, base 5+sqrt(89)
Running N+1 test using discriminant 89, base 6+sqrt(89)
Calling N+1 BLS with factored part 0.06% and helper 0.02% (0.19% proof)
2^63756-112949 is Fermat and Lucas PRP! (319.4915s+0.0053s)

To be completed...