1st PRP for 2^n-219097.

Sieved to P=200G.

Primality testing 2^90751-219097 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 37
Running N-1 test using base 53
Running N+1 test using discriminant 67, base 1+sqrt(67)
Calling N+1 BLS with factored part 0.04% and helper 0.01% (0.13% proof)
2^90751-219097 is Fermat and Lucas PRP! (558.4941s+0.0072s)

To be completed...