Primality testing 26268^28729-28729^26268 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 13, base 1+sqrt(13)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.03% proof)
26268^28729-28729^26268 is Fermat and Lucas PRP! (1299.9440s+0.0037s)

Sieved with xyyxsieve

To be completed...