700*10^64326+666*10^32163+7 is 3-PRP!

Primality testing 700*10^64326+666*10^32163+7 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 13, base 1+sqrt(13)
700*10^64326+666*10^32163+7 is Fermat and Lucas PRP! (803.3238s+0.0368s)

The number is a beastly palindromic probable prime!
Currently (03-10-22) known largest probable number of the sequence A186521.
For more details go to the website-https://oeis.org/A186521

To be completed...