2^166117+1187237 is 3-PRP!

Primality testing 2^166117+1187237 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 17
Running N-1 test using base 31
Running N+1 test using discriminant 47, base 1+sqrt(47)
2^166117+1187237 is Fermat and Lucas PRP! (510.7634s+0.0019s)

To be completed...