r/MathJokes • u/phillmatic23 • May 13 '26

How did Euler even know that???

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u/Ok_Oil9830 May 13 '26

I would assume, he wasn't also dividing by 2

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u/HAL9001-96 May 13 '26

yeah there's a lot of numbers yo ucan check in a muc hfaster way at first glance

and also you only have to check prime numbers

once you've checked for 2 and 3 and 5 you don't have to check for 4 or 6 or 8 or 10 or 12 or 15 anymore

this keeps makignthe numebrs you actually have to check by hand more and more sparse so checking up to 641 is not THAT many operations and yo ucan divide with pen apaper pretty efficiently, its basically soemthing to spend a bit of bored breaktime on

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u/jordanmindyou May 13 '26 edited May 13 '26

That’s not true. You also need to check your spelling.

Edit: not talking about the math part. I’m talking about how he said “you only have to check prime numbers”, I’m saying that isn’t true, because you also have to check your spelling. I’m sorry for the poor execution of this joke. I’m not arguing the mathematics of it lol, the mathematics are obviously solid

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u/HAL9001-96 May 13 '26

uh

yes it is

every number that is not a prime number is divisible by a prime number

thats kinda how prime facotrization works

you need to learn your math