1st PRP for 15^n+780724

Sieved to P=10G

Primality testing 15^8902+780724 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 13, base 8+sqrt(13)
Calling N-1 BLS with factored part 0.08% and helper 0.05% (0.30% proof)
15^8902+780724 is Fermat and Lucas PRP! (28.9703s+0.0013s)

To be completed...