pfgw64 -T4 -tc -q"10^487291+7"
PFGW Version 4.0.1.64BIT.20191203.Win_Dev [GWNUM 29.8]
Primality testing 10^487291+7 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
10^487291+7 is Fermat and Lucas PRP! (2825.7780s+0.0040s)

To be completed...