1st PRP for 2^n-291433.

Sieved to P=200G.

Primality testing 2^124077-291433 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.03% and helper 0.01% (0.09% proof)
2^124077-291433 is Fermat and Lucas PRP! (1557.2855s+0.0089s)

To be completed...