Is Belphegor a fallen angel

In traditional Christian and Jewish demonology, Belphegor is indeed classified as a fallen angel or demon, specifically associated with sloth and laziness among the seven deadly sins. According to various medieval and Renaissance occult texts, Belphegor was originally an angel who fell from grace and became one of the princes of Hell. The name appears in different forms across various religious and mythological traditions, with Belphegor sometimes depicted as a demon who tempts people through inventions and discoveries that promote laziness or through the promise of wealth without effort.

The mathematical connection between Belphegor and "Belphegor's Prime" (1000000000000066600000000000001) is purely a modern cultural reference rather than anything rooted in historical demonology. Mathematicians and number enthusiasts named this palindromic prime after Belphegor because it contains the number 666—often called the "number of the beast" in Christian tradition—symmetrically surrounded by 13 zeros on each side. The naming is playful rather than serious, reflecting how mathematical objects sometimes receive colorful names that reference mythology, culture, or historical figures. There's no actual connection between the demon Belphegor and this specific number beyond the creative naming convention that highlights the presence of 666 in its structure.