Primality testing 27200^31193-31193^27200 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 12+sqrt(7)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.04% proof)
27200^31193-31193^27200 is Fermat and Lucas PRP! (667.2532s+0.0023s)

Sieved with xyyxsieve

To be completed...