this post was submitted on 22 Sep 2024
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Math Memes

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John Conway proves that 91 is the smallest number which looks prime but isn't (www.youtube.com)
submitted 10 months ago by threelonmusketeers@sh.itjust.works to c/mathmemes@lemmy.blahaj.zone
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[โ€“] BigDanishGuy@sh.itjust.works -1 points 10 months ago (1 children)

9+1 = 10, therefore 91 is divisible by 10 and is not a prime ... QED, I guess

[โ€“] humorlessrepost@lemmy.world 3 points 10 months ago

In the right base, that might work.