1000000000000066600000000000001

Also known as Belphegor's prime, it is a palindromic prime consisting of a 1, thirteen (unlucky number) zeros, 666 (the devil's number), another thirteen zeros and a 1. It has 31 digits, which reads 13 (omg all ur luck just disappeared) when inverted.

A: Do you know about Belphegor's prime?
B: wth is that?
A: 1000000000000066600000000000001
B: stfu