Primes V

import time

fn main() {
    max_n := arguments()[1] or { '100_000' }.int()
    t := time.now()
    mut primes := []int{cap: max_n}
    primes << 2
    mut check := 3
    mut index := 1
    for index < max_n {
        mut is_prime := true
        for prime in primes {
            if (check % prime) == 0 {
                is_prime = false
                break
            }
        }
        if is_prime {
            primes << check
            index += 1
        }
        check += 2
    }
    println(primes.len)
    println(time.since(t))
}