1st PRP for 2^n-469121.

Sieved to P=200G.

Primality testing 2^88578-469121 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 29
Running N+1 test using discriminant 43, base 1+sqrt(43)
Running N+1 test using discriminant 43, base 2+sqrt(43)
Calling N+1 BLS with factored part 0.05% and helper 0.03% (0.18% proof)
2^88578-469121 is Fermat and Lucas PRP! (765.4074s+0.0031s)

To be completed...