For a US phone number use eg +016503087300 for (650) 308-7300 (I had some difficulty counting the +xx format)<p>Edit: <a href="https://haveibeenfacebooked.com/" rel="nofollow">https://haveibeenfacebooked.com/</a> was much easier to use.
Wanted to search by my Facebook ID, not sure what the best way to find it is, but if you go to your profile and look at page source, then search for `"USER_ID":`, then you will have your id in front.