threelonmusketeers@sh.itjust.works to Math MemesEnglish · 2 months agoJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comexternal-linkmessage-square19fedilinkarrow-up1108
arrow-up1108external-linkJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comthreelonmusketeers@sh.itjust.works to Math MemesEnglish · 2 months agomessage-square19fedilink
minus-squareBigDanishGuy@sh.itjust.workslinkfedilinkEnglisharrow-up6·2 months ago9+1 = 10, therefore 91 is divisible by 10 and is not a prime … QED, I guess
minus-squarehumorlessrepost@lemmy.worldlinkfedilinkEnglisharrow-up2·2 months agoIn the right base, that might work.
9+1 = 10, therefore 91 is divisible by 10 and is not a prime … QED, I guess
In the right base, that might work.