1st PRP for 2^n-246581.

Sieved to P=200G.

Primality testing 2^161106-246581 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 107
Running N+1 test using discriminant 149, base 2+sqrt(149)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
2^161106-246581 is Fermat and Lucas PRP! (2327.3849s+0.0084s)

To be completed...