title: Rails - how to store large numbers like 100000076685963
body: <p>I need to store large numbers like :100000076685963</p>
  
  <p>Which are to big for a db field type of integer. In my db migration I use:</p>
  
  <pre><code>  t.integer :fb_uid
  </code></pre>
  
  <p>what field type should I use for large numbers like this?</p>
  
  <p>Thanks</p>