t rex in the lotus pose

"Belphegor's prime is 1,000,000,000,000,066,600,000,000,000,001: a palindromic prime number with 666 in the middle and 13 0s on either side. It is named after Belphegor, one of the seven princes of hell." --@qikipedia via @Anthony_Etherin

The story of Belphegor's Prime.