Is Prime

Check if a number is a prime number by testing divisibility up to its square root.

Code

Algorithms
[ "$num" -le 1 ] && echo "false" && exit; for ((i=2; i*i<=num; i++)); do [ $((num%i)) -eq 0 ] && echo "false" && exit; done; echo "true"

Parameters

The number to check

Server

More Bash Snippets