Base Twelve Pi - the actual number, what it looks like, and how to calculate it.
9:12
Base 12 - Numberphile
29:59
Tesla’s 3-6-9 and Vortex Math: Is this really the key to the universe?
26:28
Old Babylonian mathematics and Plimpton 322: The remarkable OB sexagesimal system
21:12
How to Count in Fractional and Irrational Bases
17:08
Pourquoi pi est-il ici ? Et pourquoi est-il au carré ? Une réponse géométrique au problème de Bâle
33:06
Something Strange Happens When You Keep Squaring
10:42
e (Euler's Number) - Numberphile
4:46