public static void main(String[] args) {
        int n = 201;
        while (true) {
            boolean b = true;
            for (int i = 2; i < n / 2; i++) {
                if (n % i == 0)
                    b = false;
            }
            if (b)
                break;
            n++;
        }
        System.out.println(n);
    }

• 结果

211