title: How to Parse string into BigInteger?
body: <p>I'm writing my magistracy work in cryptography, and today I was trying to get a BigInteger number from the string. But the only way I find to get BigInteger number from the string was</p>
  
  <pre><code>UTF8Encoding Encoding = new UTF8Encoding();
  var bytes = Encoding.GetBytes(myString);
  var myBigInteger = new BigInteger(bytes);
  </code></pre>
  
  <p>But this is not that way I need. I need something which will return me exactly BigInteger representation of the string. For example, if I have</p>
  
  <pre><code>var myString = "1234567890";
  </code></pre>
  
  <p>I want my BigInteger to be</p>
  
  <pre><code>BigInteger bi = 1234567890;
  </code></pre>