xkcd #3137: Cursed Number

Comments

• badcommandorfilename@lemmy.world ⁨3⁩ ⁨days⁩ ago

  print(uuid())

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• palordrolap@fedia.io ⁨3⁩ ⁨days⁩ ago

  Felt like noodling a little with some numbers. I have a nice candidate. 22301. Pretty small, right? It's prime. That's not troubling to most anyone's sanity.

  There's something that can be done to that number four times (but no more) which results in a prime each time and the fourth step results in a 70 digit number that I may have looked at slightly tOo LoNnNg.

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  • Audalin@lemmy.world ⁨3⁩ ⁨days⁩ ago

    But 22301 isn’t prime? It’s 29*769.

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    • palordrolap@fedia.io ⁨3⁩ ⁨days⁩ ago

      Well, this is embarrassing. This is what I get for mathing after midnight.

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  • jaupsinluggies@feddit.uk ⁨3⁩ ⁨days⁩ ago

    If you divide it by itself and add one, you can do that infinitely many times and get a prime every time. Works for all the primes.

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    • sga@piefed.social ⁨2⁩ ⁨days⁩ ago

      it also works for all non prime perfect numbers, and also triangle numbers (all triangle numbers greater than 3 or non prime), and also for all numbers above 42, and below 69. quite a neat property sir.

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• four@lemmy.zip ⁨3⁩ ⁨days⁩ ago

  A moment of silence for all those who sacrificed themselves in the name of science

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  • ZoteTheMighty@lemmy.zip ⁨3⁩ ⁨days⁩ ago

    Actually, this isn’t useful, so we still let it be called “math”.

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• IndustryStandard@lemmy.world ⁨3⁩ ⁨days⁩ ago

  The cursed number is pi. Everyone who tries to fully read it dies. This is why we shortened it to 3.14.

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  • UnrepententProcrastinator@lemmy.ca ⁨2⁩ ⁨days⁩ ago

    You can just use 3.

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    • whoisearth@lemmy.ca ⁨2⁩ ⁨days⁩ ago

      Meh close enoigh

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    • Cocodapuf@lemmy.world ⁨2⁩ ⁨days⁩ ago

      I like 22/7

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  • sga@piefed.social ⁨2⁩ ⁨days⁩ ago

    everyone who has ever heard of pi, has either died, or will die. just thought of pi gives you a chronic illness which can not be cured

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• Big_Boss_77@lemmynsfw.com ⁨3⁩ ⁨days⁩ ago

  SCP-2.6*10^21^

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• DarkCloud@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Sounds like those stupid Rationalist cult groups who spend their time coming up with AI fantasies, and claim some thought-experiments are so powerful they’ll ruin your mind - real immature stuff. Deserves to be lampooned like this.

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• nialv7@lemmy.world ⁨3⁩ ⁨days⁩ ago

  If a number is long enough human won’t be able to perceive it all at once, so in fact there are only finite number of cases we need to check.

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  • Jankatarch@lemmy.world ⁨3⁩ ⁨days⁩ ago

    Human will run out of memory when reading the number, in fact.

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• ripcord@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Sounds like the seed of an SCP.

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• Dasus@lemmy.world ⁨3⁩ ⁨days⁩ ago

  Sure there’s quite a lot of them to choose from, but for instance USPS tracking numbers are 22-digit numbers.

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• tisktisk@piefed.social ⁨3⁩ ⁨days⁩ ago

  I'm confused, what is this new lower bound specifically?

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  • finalarbiter@lemmy.dbzer0.com ⁨3⁩ ⁨days⁩ ago

    The number that makes people go insane is bigger than 2.6*10^21^, or 2,600,000,000,000,000,000,000

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  • GraniteM@lemmy.world ⁨3⁩ ⁨days⁩ ago

    www.explainxkcd.com/wiki/…/3137:_Cursed_Number

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  • pressanykeynow@lemmy.world ⁨3⁩ ⁨days⁩ ago

    Works as intended then.

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• ksigley@lemmy.world ⁨2⁩ ⁨days⁩ ago

  There really is an xkcd for everything.

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• ShinkanTrain@lemmy.ml ⁨2⁩ ⁨days⁩ ago

  This is why they invented notation. Just to be safe

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