Primality testing 27535^32676-32676^27535 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 11
Running N-1 test using base 13
Running N+1 test using discriminant 23, base 1+sqrt(23)
Calling N-1 BLS with factored part 0.01% and helper 0.01% (0.04% proof)
27535^32676-32676^27535 is Fermat and Lucas PRP! (854.4853s+0.0022s)

Sieved with xyyxsieve

To be completed...