PFGW Version 20090928.Win_Dev (Beta caveat utilitor ) [GWNUM 25.13]

Primality testing Phi(83967,10)/2272482889 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 19, base 1+sqrt(19)
Phi(83967,10)/2272482889 is Fermat and Lucas PRP! (2260.7696s+0.1348s)

To be completed...