Primality testing 16567...60001 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 19
Running N+1 test using discriminant 37, base 12+sqrt(37)
Calling N-1 BLS with factored part 0.48% and helper 0.00% (1.45% proof)
16567...60001 is Fermat and Lucas PRP! (94.5319s+0.0192s)
To be completed...