Primality testing 701^23844-23844^701 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N-1 test using base 11
Running N-1 test using base 13
Running N+1 test using discriminant 19, base 2+sqrt(19)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.05% proof)
701^23844-23844^701 is Fermat and Lucas PRP! (291.1405s+0.0015s)

Sieved with xyyxsieve

To be completed...