2^166117+1947975 is 3-PRP!

Primality testing 2^166117+1947975 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 2+sqrt(11)
2^166117+1947975 is Fermat and Lucas PRP! (202.8807s+0.0034s)

To be completed...