public static void main(String... args) {
        long target = 600851475143L;
        long divideNum = 2;

        while (target != 1) {

            System.out.println(divideNum);

            if (isPrime(divideNum)) {
                if (target % divideNum == 0) {
                    target = target / divideNum;
                    System.out.println("target = " + target + "  divideNum = " + divideNum);
                    continue;
                }
            }

            System.out.println("aaa" + divideNum);
            divideNum += 1;
        }
    }