VERY FAST PRIME NUMBER FINDER

#!/bin/bash
i=1
while true; do
    (( i++ ))
    is_prime=true
    for ((j=2; j<=i/2; j++)); do
        if (( i % j == 0 )); then
            is_prime=false
            break
        fi
    done
    if [[ $is_prime == true ]]; then
        echo $i
    fi
done