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My Patreon: https://www.patreon.com/ProZD
My Cameo: https://www.cameo.com/prozd
My Let's Play Channel: https://www.youtube.com/@prozdplaysgames
My Autograph Store: https://streamily.com/sungwoncho
My Bluesky: https://bsky.app/profile/prozdishere.bsky.social
My Merch/T-Shirt Store: http://www.theyetee.com/prozd
My Tumblr: http://prozdvoices.tumblr.com/
My Twitch: https://www.twitch.tv/prozd
My Tiktok: https://www.tiktok.com/@prozd_tiktok
My Instagram: https://instagram.com/prozd

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 prime factors for m = 14 or 15 are likewise exceptional. May I point out that similar "factoring status" pages are also maintained for bases a = 3, 5, 6, 7, 11, 12 at http://www.prothsearch.com/ "

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If you saw Hank Green's video about the exploding churro, his diagnosis is correct. Also, the thing that happened to that churro has a name! Case hardening!

Case hardening is a whole thing in food science. It can make churros explode, and it's also why cheese & cured meats have to cure slowly for a long time. But for something that's such a big deal in food handling, it's weirdly hard to find info on. So we're gonna talk about it.

Also hopefully nobody in that video got hurt. I mean a steam explosion to the mouth, yikes. : /

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#churros #churro #cooking #explosion #frying #science #foodscience #knitting #knitting #fiber #fiberart #fiberartist