1st PRP for 28^n-3713

Sieved to P=10G

Primality testing 28^8719-3713 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 17, base 1+sqrt(17)
Running N+1 test using discriminant 17, base 2+sqrt(17)
Calling N+1 BLS with factored part 0.08% and helper 0.00% (0.23% proof)
28^8719-3713 is Fermat and Lucas PRP! (245.8358s+0.0087s)

To be completed...