A Video about the Number 10 - Numberphile

Featuring the friendless number 10 for our 10-year anniversary... James Grime is back where it all began.
More links & stuff in full description below ↓↓↓

James is at The City Ground - see the original 11.11.11 video at:

NUMBERPHILE

Videos by Brady Haran
Animation by Pete McPartlan

[veritasium]

Congrats on 10 years! I thought the setting looked familiar and I had to double check the publication date to make sure it wasn't a super old video.

[palmgameboy]

And they made the video 10 minutes and 10 seconds long? Truly satisfying 😭😭😭

[feynmandirac]

James hasn't changed in 10 years, he's immortal

[Psyxhotic]

Can't believe it's been 10 years of numberphile, remembered the early days of numberphile and recognised the place immediately, what a journey this channel has gone through with the iconic brown paper

[blackpenredpen]

Wow I can’t believe it’s been 10 years!!! Thank you for all the videos throughout these years!

[BigDBrian]

I love how James Grime calls back to the numberphile classics... all of them featuring him

[swfreak]

this man hasn't aged a day in the last ten years

[erbro]

Great, all the perfect numbers are friends with each other. Highschool all over again.

[olmostgudinaf]

"Let's talk about the number 10."
Proceeds not mention the number 10 for 90% of the video.

[mpalin]

Oh. So Numberphile started on the same day as Skyrim was released? Fascinating 😃

[brickfancypant]

The channel that inspired me to take up a major in math.Congrats on the milestone, keep inspiring!

[Supertimegamingify]

The last ten years have been so much better than they might otherwise have been thanks to Numberphile. Thanks :D

[Klaevin]

10 years??
I've actually seen every numberphile video and came here from singing banana when James advertised a "new maths based channel" about numbers.
I love all the new content but the videos on numbers also bring back nostalgia

[tmrogers]

The clip of James saying “awww friends” is now looking rent-free in my mind

[creepiona]

10 years and yet James didn't age a single day.

[grandexandi]

This made me feel so old, but it warmed my heart too. 10 may not have friends, but Numberphile has definitely made a lot of friends in these 10 years.

[JPKocher]

10 years anniversary can‘t be right. He doesn‘t look a day older than then.

[dataandcolours]

If I may add, the average abundancy index AI (only referred to as index in this video) is π²/6.
Note how the abundancy index is a multiplicative function if the factors are relatively prime (just like the sigma function). So
Also we may instead group them not as friends but into abundancy index groups. If we call the abundancy index σ(n)/n=€(n) where each integers fall into a group based on floor(e^€(n)).
Also since π²/6 is irrational and all abundancy index are rational numbers, there cannot exist an integer that has an abundancy index that is equal to the mean of all abundancy indexes π²/6.

[jerry]

Damn. I instantly recognised the film location. Nostalgic!

[rutger]

Happy anniversary, glad to have followed you for about half of it!