密码泄露的漏洞终于补上了。但是为了避免恶意猜测密码，某网站推出了素数验证码（好弱的验证码……）。用户需要判定网站给出的数字是否是素数。 -The leak of the password is finally filled. However, in order to avoid malicious guess password, a website launched a prime number verification code (good weak verification code ...