PFGW Version 1.2.0 for Windows [FFT v23.8]

Primality testing 2^261856+98765331 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 3
Running N-1 test using base 5
Running N-1 test using base 7
Running N+1 test using discriminant 13, base 2+sqrt(13)
2^261856+98765331 is Fermat and Lucas PRP!

To be completed...