1st PRP for 2^n-48703.

Sieved to P=200G.

Primality testing 2^156073-48703 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 71
Running N-1 test using base 79
Running N+1 test using discriminant 101, base 3+sqrt(101)
Calling N-1 BLS with factored part 0.03% and helper 0.01% (0.11% proof)
2^156073-48703 is Fermat and Lucas PRP! (3797.0107s+0.0090s)

To be completed...