The fact that there are 5 is important Your strategy isn't to pick the lowest prime. It's to pick a prime that less than 5 other people would pick lower than -

The fact that there are 5 is important Your strategy isn't to pick the lowest prime. It's to pick a prime that less than 5 other people would pick lower than - so you will tend to pick a higher number. The larger the group of pickers the higher you should pick.