Keith Numbers - Numberphile





The interactive transcript could not be loaded.



Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Nov 13, 2012

Bid for this paper on ebay: http://cgi.ebay.co.uk/ws/eBayISAPI.dl...
Professor Copeland on Keith numbers, clusters and "reverse Keiths".
More links & stuff in full description below ↓↓↓

And before commenting on the merits of "recreational maths" - hear what Ed says. Ed tweets at https://twitter.com/ProfEdCopeland

Keith Numbers are also known as repfigit numbers (repetitive Fibonacci-like digit).

We also spoke with Mike Keith about his numbers and he issued a playful challenge:

"There are many variations on this idea that you can imagine. For example, for a 3-digit number, instead of the next term being a+b+c (a,b,c being the three previous terms) it could be a+2b+3c, or a^2 + b + c or even more fancifully, 2a + b + the cth prime number. You could think up your own version, and name it after yourself!"

Website: http://www.numberphile.com/
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
Subscribe: http://bit.ly/Numberphile_Sub

Videos by Brady Haran

Patreon: http://www.patreon.com/numberphile

Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/

Brady's latest videos across all channels: http://www.bradyharanblog.com/

Sign up for (occasional) emails: http://eepurl.com/YdjL9

Numberphile T-Shirts: https://teespring.com/stores/numberphile
Other merchandise: https://store.dftba.com/collections/n...


When autoplay is enabled, a suggested video will automatically play next.

Up next

to add this to Watch Later

Add to

Loading playlists...