themaninblack@lemmy.world to memes@lemmy.world · 3 months agoMath(s)lemmy.worldimagemessage-square43fedilinkarrow-up1585arrow-down129
arrow-up1556arrow-down1imageMath(s)lemmy.worldthemaninblack@lemmy.world to memes@lemmy.world · 3 months agomessage-square43fedilink
minus-squareiknowitwheniseeit@lemmynsfw.comlinkfedilinkarrow-up3·3 months agoWhy? 19 is 15+4 but is still prime?
minus-squareVerito@lemm.eelinkfedilinkarrow-up4·3 months agoBecause 30 and 21 are both divisible by the same number, 3.
Why? 19 is 15+4 but is still prime?
Because 30 and 21 are both divisible by the same number, 3.
Exactly 3(10+7)