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# The Problem with 7825 - Numberphile

Sitene ekle

**Published on May 17, 2018**

Signup for your free trial to The Great Courses Plus here: http://ow.ly/b5wA30hIviV (sponsor) More links & stuff in full description below ↓↓↓ James Grime on a proof involving Pythagorean Triples. James Grime: http://singingbanana.com (book him for a talk) More on the proof: https://www.cs.utexas.edu/~marijn/ptn/ Preprint of the paper: https://arxiv.org/abs/1605.00723 Ron Graham videos: http://bit.ly/Ron_Graham Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. https://www.simonsfoundation.org/outr... And support from Math For America - https://www.mathforamerica.org/ NUMBERPHILE 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 The Great Courses Plus is currently available to watch through a web browser to almost anyone in the world and optimized for the US, UK, and Australian markets. The Great Courses Plus is currently working to both optimize the product globally and accept credit card payments globally.

MrZanySlime9 months agoLook, another seemingly arbitrary number to use as clickbait! Classic Numberphile ;D

Zappa Woman9 months agoI have synaesthesia only where numbers are concerned. As a child, I was trying to find a way to make the numbers add up in such a way that their respective colours would blend to give me the correct colour for their total. I quickly ran into the same problem you guys did.

Ian Jeffray9 months agoThat blue pen appears rather green

Nigella Farage9 months ago (edited)lol blue and red makes purple, so 7825 is purple, silly mathematicians

Aiden Midwinter9 months agoProbably my favorite guy on Numberphile.

Clingfilm Productions9 months agoI bet I could do this for a^3 + b^3 = c^3

Ignacio9 months agoWhat, a new Internet Comment Etiquette AND a new Numberphile video at the same time? is it Christmas already??''

TheDirewolf 12349 months agoRamsay theory : The formula to find lamb sauce.

pentix9 months agoI have to do some calculus exercises...

Qba1169 months agoI love these classic Numberphile videos where James Grime talks about one particular number

hOREP9 months agoit doesn't look blue because it's on brown paper.

WanderingRandomer9 months agoThat blue pen didn't look very blue to me

Hawkeye9 months ago...and those two days of supercomputation probably cost more than 100$ :)

Do the Maths9 months agoI always get excited when James grime is on numberphile

Will Price9 months agoFine example of a Parker Grid at

Alex Ornelas9 months agoThese things are interesting, but what I would like to see in these videos is more explanation of why it matters.I know he talks about not knowing why it is true, but I want to know why it matters at all. Why does it matter if you can or can't color in numbers a certain color in a formula?

kjrunia9 months agoThat Rubik's Cube, though. Argh! Needs... solving... quickly... before my heart... argh... help!

Hygo9 months agoI can feel 7825. When I go somewhere where everyone is having a good time, everything stops when I get there.

kjrunia9 months ago (edited)The colour that blue pen produces is as blue as people hear Yanny.

Jasmin Caro9 months agoAaaaahh! I've missed seeing James!! 🤗🤗