Primality testing 25430^39869-39869^25430 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 9+sqrt(7)
Calling N-1 BLS with factored part 0.00% and helper 0.00% (0.02% proof)
25430^39869-39869^25430 is Fermat and Lucas PRP! (1385.8888s+0.0041s)

Sieved with xyyxsieve

To be completed...