Primality testing (61*10^43271-7)/9 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 41
Running N+1 test using discriminant 47, base 2+sqrt(47)
Calling N+1 BLS with factored part 0.03% and helper 0.01% (0.09% proof)
(61*10^43271-7)/9 is Fermat and Lucas PRP! (2370.5916s+0.0061s)

To be completed...