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This is Numberphile. We mainly post videos about mathematics and just numbers in general.

41 and more Ulam's Spiral

41 and more Ulam's Spiral

More on prime numbers and Ulam's Spiral - this time focusing on 41 and Arthur C. Clarke.

This video features Dr James Clewett.
More Clewett videos at: http://bit.ly/JamesClewett

See our other Ulam Spiral video at: http://youtu.be/iFuR97YcSLM

The book discussed is The Garden of Rama.

Infinity Paradoxes

Infinity Paradoxes

Prime Spirals

Prime Spirals