title: Regular expression for a string that must contain minimum 14 characters, where at minimum 2 are numbers, and at minimum 6 are letters
body: <p>I need a regex that tests a string for a </p>
  
  <ul>
  <li>minimum of 14 characters - valid are <code>A-Za-z0-9#,.-_</code></li>
  <li>minimum of 6 letters within that 14</li>
  <li>minimum of 2 numbers within that 14</li>
  </ul>
  
  <p>Is there a way I can wrap this up in one regular expression (currently I have a javascript and php function that does three separate tests, one that it is 14 total, another that there is at least two numbers, and another that there is at least 6 letters.</p>
  
  <p>So the following would be valid:</p>
  
  <ul>
  <li>blabla2bla2f54a (valid >14 total, with at least 6 letters, at least 2 numbers)</li>
  <li>thisIsNotValidAtAll (invalid because less than 2 numbers)</li>
  </ul>