1st PRP for 2^n-383009.
Sieved to P=200G.
Primality testing 2^159984-383009 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 103
Running N+1 test using discriminant 131, base 1+sqrt(131)
Calling N+1 BLS with factored part 0.02% and helper 0.01% (0.07% proof)
2^159984-383009 is Fermat and Lucas PRP! (2380.7715s+0.0078s)
To be completed...