Contact Books Home by Dr. Cliff Pickover Gaze in awe at Belphegor's Prime: 1000000000000066600000000000001 is a palindromic prime number , with 666 hiding among the zeros. Please also note the ominous presence of 13 zeros. Please don't stare at the number too long. Look away for a few seconds, and take a deep breath. The symbol of Belphegor's Prime resembles Pi, only upside down. It is derived from a bird glyph first seen embedded in the Voynich Manuscript. 1000000000000066600000000000001 Der Hl. Augustinus und der Teufel In demonology, Belphegor (or Beelphegor) is a demon. The creature is one of the seven princes of Hell and helps people make discoveries. In John Milton's Paradise Lost , Belphegor is one of the "Principalities of the Prime." In hell, Belphegor is the demon of inventiveness. ← Interested in more mathematical weirdness through...