From the factorDB.com database of PRP
Rechecked by PFGW:
Primality testing (10^180683-1)*9/(10^643-1)/(10^281-1) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 7
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N-1 BLS with factored part 0.08% and helper 0.00% (0.24% proof)
(10^180683-1)*9/(10^643-1)/(10^281-1) is Fermat and Lucas PRP! (13755.0466s+0.0235s)

To be completed...