# Matt Parker on Reddit (u/standupmaths)

Part of Creators on Reddit, researched with Autumn (https://www.autumn.ai) from public sources. Updated 2026-11-07. Interactive version: https://www.autumn.ai/resources/creators-on-reddit/matt-parker

Matt Parker: Maths YouTuber and author, Stand-up Maths.

- Reddit account: [u/standupmaths](https://www.reddit.com/user/standupmaths/) (Personal account)
- How we know it's theirs: [Their 2020 r/math AMA, posted from this account](https://www.reddit.com/r/math/comments/f3cqtx/i_often_see_my_stuff_and_indeed_numberphile_pop/)
- Where they post, in the records we retrieved: r/math (155), r/Cubers (72), r/IAmA (34), r/MattParker (33), r/books (29), r/mathematics (23)
- Known activity in the posts we found: 2011 to 2026
- Wikipedia: https://en.wikipedia.org/wiki/Matt_Parker

## Moments

### u/standupmaths in r/badmathematics, Feb 1, 2018 · Funny

Replying to the post "Do you have any mathematical beliefs that border on being crank-y?".

> 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.

Full thread: https://www.reddit.com/r/badmathematics/comments/7ukjzy/comment/dtl3b7c/ · 109 points as of Nov 7, 2026

### u/standupmaths in r/math, Dec 5, 2023 · Funny

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

> Without loss of generality, we would like to apologise.

Full thread: https://www.reddit.com/r/math/comments/18b2yyc/comment/kc22o3l/ · 788 points as of Nov 7, 2026

### u/standupmaths in r/math, Jan 16, 2018 · Funny

Replying to a redditor:

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

> 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.

Full thread: https://www.reddit.com/r/math/comments/7qrkx6/comment/dsrsbdn/ · 88 points as of Nov 7, 2026

### u/standupmaths in r/IAmA, Feb 13, 2020 · Cut idea

Replying to a redditor:

> 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!

> 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.)
Full thread: https://www.reddit.com/r/IAmA/comments/f3cm7d/comment/fhi7kik/ · 44 points as of Nov 7, 2026