threelonmusketeers to Math [email protected]English • 20 hours agoJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comexternal-linkmessage-square19fedilinkarrow-up194arrow-down13
arrow-up191arrow-down1external-linkJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comthreelonmusketeers to Math [email protected]English • 20 hours agomessage-square19fedilink
Its only factors are 1 and itself after all