What do 5, 13 and 563 have in common?
We're talking Prime Numbers again... Featuring Dr James Grime.
Extra footage: http://youtu.be/AiplrfFB6h0
Our Prime Numbers extravaganza: http://bit.ly/primevids
Brown paper: http://bit.ly/brownpapers
Liar Numbers: https://www.youtube.com/watch?v=jbiaz_aHHUQ