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Why do cicadas emerge every 17 years - featuring Steve Mould. Steve is on Twitter at

See Steve talkabout Benford's Law at: And discuss Pi at:

The golden ratio video will be coming soon. Keep an eye on Numberphile.

Website: Numberphile on Facebook: Numberphile tweets: Google Plus: Tumblr: Videos by Brady Haran

A run-down of Brady's channels:

Appears on these pages

  • 17

    7th smallest prime number, Supposedly the "least random number", 2² + 3² + 5² + 7² + 11² + 13² ...

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current10:58, July 25, 2013Thumbnail for version as of 10:58, July 25, 2013480 × 269 (21 KB)CAFischer (wall | contribs)created video