1st PRP for 2^n-487811.
Sieved to P=200G.
Primality testing 2^194978-487811 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 13, base 1+sqrt(13)
Calling N+1 BLS with factored part 0.03% and helper 0.01% (0.08% proof)
2^194978-487811 is Fermat and Lucas PRP! (1164.5239s+0.0003s)
To be completed...