Primality testing Phi(50131,10)/89010999409/9123691040118653/18020045580157867/30621915318063801947 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Generic modular reduction using generic reduction type-1 FFT length 16K, Pass1=64, Pass2=256 on A 166321-bit number
Running N-1 test using base 3
Generic modular reduction using generic reduction type-1 FFT length 16K, Pass1=64, Pass2=256 on A 166321-bit number
Running N+1 test using discriminant 11, base 1+sqrt(11)
Generic modular reduction using generic reduction type-1 FFT length 16K, Pass1=64, Pass2=256 on A 166321-bit number
Calling N-1 BLS with factored part 0.02% and helper 0.00% (0.06% proof)
Phi(50131,10)/89010999409/9123691040118653/18020045580157867/30621915318063801947 is Fermat and Lucas PRP! (1215.1113s+0.3585s)

To be completed...