1st PRP for 2^n-377141.

Sieved to P=200G.

Primality testing 2^39002-377141 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 31
Running N+1 test using discriminant 43, base 1+sqrt(43)
Calling N+1 BLS with factored part 0.06% and helper 0.04% (0.24% proof)
2^39002-377141 is Fermat and Lucas PRP! (77.8635s+0.0054s)

To be completed...