One of the princes of Hell who has the curious ability of bringing people to the Devil by helping them create new things and inventions that make them rich. Probably began as an ancient Moabite deity known as Baal-Peor. The ancient Israelites became fond of this deity, and to bring them back to their own god, the priests demonized him, saying he would cause dissention, give wealth, and was associated with sexual deviancy.

There is an unusual prime number that is also palindromic, meaning that it reads the same left to right and right to left. Also known as a palprime, the one known as Belphegor’s Prime consists of the number one, followed by thirteen zeros, followed by 666, followed by thirteen more zeros, and finished with a one:

1000000000000066600000000000001.