Evil Number

Additional information

Is there a more evil number than Belphegor's Prime...

Don't miss the extra footage on Numberphile2: https://youtu.be/9CcI5M1LfRs

This video features Professor Tony Padilla from the University of Nottingham.

More Tony videos: http://bit.ly/Padilla_Numberphile

666 video: https://youtu.be/UkZqFtYtqaI