PFGW Version 20020515.Win_Dev (Beta software, 'caveat utilitor')
Primality testing 19^61980-18 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 3+sqrt(11)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.05% proof)
19^61980-18 is Fermat and Lucas PRP! (18331.843000 seconds)

To be completed...