We use Facebook to update our status and connect with your friends. Each and every username has an unique ID but it displays as username (text format) in your Address bar. Like this ( http://facebook.com/balajistirupur and not like this http://facebook.com/100000910793343 ) I hope you may noticed in your Facebook account.
Facebook ID represents the registration number on Facebook. Mark-Zuckerberg has the ID of 4 in Facebook where 1 to 3 ID’s used for test registration to clear their bugs, as mentioned in Quora. Here is an embed text from quora.
You feel eager to find your Facebook registration number i.e Facebook Numeric ID go to this link FIND MY FACEBOOK NUMERIC ID and paste your Facebook profile link to the box and hit LOOKUP NUMERIC ID button to know your Facebook registration number or numeric ID.
What is the use of Facebook numeric ID: You can know in what place you are and your ranking in Facebook , how many ID’s is been created before you create your account on Facebook and minus it by 3 (-3) to know your exact position on Facebook .
The NUMERIC ID is also available for groups, pages, profiles, notes etc… know the position in Facebook ( how many profiles are created before you create yours. )
What’s your’s share with us through comments..!!!