100000001 is divisible by 17 - Numberphile

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Featuring Matt Parker. Learn for free on Brilliant (and get 20% off a premium subscription) at https://brilliant.org/numberphile (episode sponsor). Extended footnote and other links in full description below ↓↓↓ Extra clips and outtakes from this video on our Patreon - https://www.patreon.com/posts/145064106 Matt Parker books - https://mathsgear.co.uk/collections/books And Matt's books on Amazon - https://amzn.to/4rK4j3C Penguin UK: https://www.penguin.co.uk/authors/77633/matt-parker Penguin Random House US: https://www.penguinrandomhouse.com/authors/2198716/matt-parker/ Matt Parker - https://standupmaths.com/ Matt's YouTube channel (standupmaths) - https://www.youtube.com/user/standupmaths More Matt on Numberphile - https://www.youtube.com/playlist?list=PLt5AfwLFPxWKuRpivZd_ivR2EvEzKrDUu FOOTNOTE TO THIS VIDEO * I contacted Wilfrid Keller after filming about his retired website, and he replied with the following... "I am delighted by your interest in the topic of 'Prime factors of generalized Fermat numbers Fm(10) and complete factoring status'. The (constantly updated) webpage with exactly this title is still available at http://www.prothsearch.com/GFN10.html (only the Internet domain has changed to http://www.prothsearch.com/ about nine years ago). Some remarkable results have been achieved in the meantime. The largest prime factor currently known of a number Fm(10) has 4666663 digits (you might also have a look at https://t5k.org/top20/page.php?id=10 ), and large

Published 2025-12-09 · Watch on YouTube ↗
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