1st PRP for 2^n-239381.

Sieved to P=200G.

Primality testing 2^128630-239381 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 37, base 1+sqrt(37)
Calling N+1 BLS with factored part 0.03% and helper 0.02% (0.12% proof)
2^128630-239381 is Fermat and Lucas PRP! (1679.5634s+0.0059s)

To be completed...