/* Check whether or not an integer input as command line argument is prime. */

fun main(args: Array<String>) {
    val n = args[0].toInt()
    var isPrime = n >= 2

    var d = 2
    while (d * d <= n) {
        if (n % d == 0) {
            isPrime = false
            break
        }
        ++d
    }

    println("${if (!isPrime) "not " else ""}prime")
}