1st PRP for 2^n-205529.

Sieved to P=200G.

Primality testing 2^72000-205529 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 113
Running N+1 test using discriminant 197, base 1+sqrt(197)
Running N+1 test using discriminant 197, base 3+sqrt(197)
Running N+1 test using discriminant 197, base 5+sqrt(197)
Calling N+1 BLS with factored part 0.06% and helper 0.03% (0.22% proof)
2^72000-205529 is Fermat and Lucas PRP! (696.3753s+0.0067s)

To be completed...