1st PRP for 2^n-328567.

Sieved to P=200G.

Primality testing 2^84199-328567 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Running N+1 test using discriminant 19, base 14+sqrt(19)
Calling N-1 BLS with factored part 0.02% and helper 0.00% (0.05% proof)
2^84199-328567 is Fermat and Lucas PRP! (403.5351s+0.0034s)

To be completed...