1st PRP for 2^n-111817.

Sieved to P=200G.

Primality testing 2^49679-111817 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 149
Running N-1 test using base 157
Running N-1 test using base 173
Running N+1 test using discriminant 193, base 3+sqrt(193)
Calling N+1 BLS with factored part 0.04% and helper 0.02% (0.13% proof)
2^49679-111817 is Fermat and Lucas PRP! (212.7144s+0.0076s)

To be completed...