2^166117+1752471 is 3-PRP!
Primality testing 2^166117+1752471 [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)
2^166117+1752471 is Fermat and Lucas PRP! (370.0698s+0.0016s)
To be completed...