PFGW Version 1.2.0 for Windows [FFT v23.8]
Primality testing (73*10^21319+17)/9 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 1+sqrt(7)
(73*10^21319+17)/9 is Fermat and Lucas PRP! (129.8723s+0.0010s)

To be completed...