/* Get n from the commandline argument and prints all primes <= n. */

class Primes {

    public static void main(String[] args) {
        int maxN = Integer.parseInt(args[0]);

        int count = 0;
        int n = 2;
        System.out.println("Prime Table\n===========");
        while (n <= maxN) {
            boolean isPrime = true;
            int d = 2;
            while (d < n) {
                if (n % d == 0) {
                    isPrime = false;
                    break;
                }
                d++;
            }
            if (isPrime) {
                System.out.printf("%5d", n);
                count++;
                if (count == 10) {
                    System.out.println();
                    count = 0;
                }
            }
            n++;
        }
        if (count < 10)
            System.out.println();
    }
}