PFGW Version 1.2.0 for Windows [FFT v23.8]
Primality testing 10^31373+990099 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 19, base 14+sqrt(19)
10^31373+990099 is Fermat and Lucas PRP!
To be completed...