1st PRP for 2^n-318209.

Sieved to P=200G.

Primality testing 2^55224-318209 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 229
Running N+1 test using discriminant 5, base 1+sqrt(5)
Calling N+1 BLS with factored part 0.07% and helper 0.03% (0.25% proof)
2^55224-318209 is Fermat and Lucas PRP! (164.2268s+0.0052s)

To be completed...