public static void main(String[] args) {
        int k = 2;
        int num = NUM;
        System.out.print(num + "=");
        while (num > k) {
            if (num % k == 0) {
                System.out.print(k + "*");
                num = num / k;
            } else {
                k++;
            }
        }
        System.out.println(k);
    }