Primality testing 25935^27254-27254^25935 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Running N-1 test using base 17
Running N+1 test using discriminant 23, base 6+sqrt(23)
Calling N-1 BLS with factored part 0.01% and helper 0.01% (0.05% proof)
25935^27254-27254^25935 is Fermat and Lucas PRP! (1124.7072s+0.0038s)

Sieved with xyyxsieve

To be completed...