Near-repdigit probable prime
http://homepage2.nifty.com/m_kamada/math/factorizations.htm
PFGW Version 3.4.8.64BIT.20110617.Win_Dev [GWNUM 26.6]
Primality testing (61*10^66575-7)/9 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 17, base 12+sqrt(17)
(61*10^66575-7)/9 is Fermat and Lucas PRP! (1151.4153s+0.0036s)

To be completed...