1st PRP for 2^n-331753.

Sieved to P=200G.

Primality testing 2^103041-331753 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 19
Running N-1 test using base 37
Running N+1 test using discriminant 53, base 1+sqrt(53)
Calling N+1 BLS with factored part 0.03% and helper 0.00% (0.09% proof)
2^103041-331753 is Fermat and Lucas PRP! (595.3105s+0.0366s)

To be completed...