Sjmarf to People Twitter · 6 months agoIt looks so wrongimagemessage-square72linkfedilinkarrow-up1635arrow-down130
arrow-up1605arrow-down1imageIt looks so wrongSjmarf to People Twitter · 6 months agomessage-square72linkfedilink
minus-squaresugar_in_your_tealinkfedilinkarrow-up15·edit-25 months agoYup, my personal prime check is: Even? Ends in 5? Digits sum to 3? If it fails all three and it’s not an “obvious” prime (<20), then it’s prime enough for me.
minus-squareKnock_Knock_Lemmy_In@lemmy.worldlinkfedilinkarrow-up2·5 months agoAlso Ends in 0, but that’s covered by 5 really.
Yup, my personal prime check is:
If it fails all three and it’s not an “obvious” prime (<20), then it’s prime enough for me.
Also
Ends in 0,
but that’s covered by 5 really.
It’s also covered by being even.