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submitted 2 years ago by threelonmusketeers@sh.itjust.works to c/mathmemes@lemmy.blahaj.zone

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[-] threelonmusketeers@sh.itjust.works 4 points 2 years ago* (last edited 2 years ago)

21 should be

2 + 1 = 3, therefore 21 is divisible by 3 and is not prime. QED :)

[-] BigDanishGuy@sh.itjust.works -1 points 2 years ago

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

[-] humorlessrepost@lemmy.world 3 points 2 years ago

In the right base, that might work.

this post was submitted on 22 Sep 2024

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