Creators on Reddit

Matt Parker

Maths YouTuber and author, Stand-up Maths

u/standupmaths ↗Personal account

We retrieved 21 posts and 516 comments from u/standupmaths, dated 2011 to 2026, most often in r/math, r/Cubers and r/IAmA.

Best moment

A redditor posted in r/badmathematics

Do you have any mathematical beliefs that border on being crank-y?

As people who spend time laughing at bad mathematics, we're obviously somewhat immune to some of the common crank subjects, but perhaps that's just because we haven't found our cause yet. Are there any things that you could see yourself in another life being a crank about or…

u/standupmaths replied

My crank belief would be that 2 and 3 are not prime. They’re too small to really have factors and so only meet the criteria for prime-ness by default. 5 is the smallest prime which is bigger than a composite…

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My crank belief would be that 2 and 3 are not prime. They’re too small to really have factors and so only meet the criteria for prime-ness by default. 5 is the smallest prime which is bigger than a composite number, so it has earned being prime.

This would solve all the prime proofs that need to exclude p=2 and/or p=3.

Crank version of me would reclassify 2 and 3 as being sub-prime numbers.

Funnyr/badmathematics · 109 points as of Nov 2026Full thread ↗

More moments

A redditor posted in r/math

Anyone else can’t seem to get rid of the “math voice”?

I grew up with and learnt English from math videos; 3b1b, bprp, numberphile etc and spent most of my time reading math papers because I enjoyed doing so. I’ve written a few papers (essays) myself, some for fun and some for school projects, my first being using Python to find…

u/standupmaths replied

Without loss of generality, we would like to apologise.

A redditor wrote in r/math

On “Ordered a Klein Bottle from Cliff Stoll. He sent a bunch of photos with the bottle and a really nice note. What a great guy. (Note in comments)”

I've seen this guy on Numberphile and thought he seemed like a really fun guy, this just confirms it! Thanks for sharing!

u/standupmaths replied

I can confirm that the Cliff you see in the Numberphile videos etc is exactly the Cliff you get in person.

Only more so. Real-life Cliff is up to an extra 61.8% more Cliff than Video Cliff.

A redditor wrote in r/IAmA

On “It's me, Matt Parker, maths author, youtuber and creator of semi-adequate magic squares. A+M+A”

Was there anything that you had to cut from Humble Pi that you wish could have made it into the book? Also, congrats to Dr. Lucie on the successful launch of the solar orbiter!

u/standupmaths replied

There is a bunch of small stuff which didn't make it into the book. - I wanted to have a section of hash values and hash collisions. I went so far as to use random reference codes on my post-it…

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There is a bunch of small stuff which didn't make it into the book.

  • I wanted to have a section of hash values and hash collisions. I went so far as to use random reference codes on my post-it notes to see if I would have a collision while writing the book: and I did! But that section didn't even make it to the first draft.
Excerpt
Cut ideaThe ideas that didn't make itr/IAmA · 44 points as of Nov 2026Full thread ↗