PFGW:
Primality testing 4^48158-3^(48158+1) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 7
Running N+1 test using discriminant 13, base 6+sqrt(13)
Calling N-1 BLS with factored part 0.03% and helper 0.02% (0.10% proof)
4^48158-3^(48158+1) is Fermat and Lucas PRP! (296.5822s+0.0021s)
Primality testing 4^86754-3^(86754+1) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 7, base 1+sqrt(7)
Calling N+1 BLS with factored part 0.02% and helper 0.01% (0.06% proof)
4^86754-3^(86754+1) is Fermat and Lucas PRP! (807.4617s+0.0032s)

To be completed...