I believe it was @lukestokes who recently posted his Steemit sign-up number or "registered" number (ex. Number 13,000ish to sign up on Steemit). Being curious about my own number, I set out to find what tool could pull up that information for me. Follow the guide below to retrieve your own Steemit number!

1. Go to the top right corner of Steemit.com and open the menu.
   

2. Click the Steemit App Center.
   

3. Find and click on the Steem Whales app.
   

4. In the app, go to the top right, enter your own Steemit username and click Search. (Doesn't matter if you are actually a whale or not.)
   

5. On your profile page toward the top right, click the Steemd blue link.
   

6. You'll find your ID number on the left hand side, which is your Steemit registration number.
   

You can also cut straight to the Steemd app and skip SteemWhales but its more difficult to find your number this way. I also found SteemWhales to provide interesting information so I included those steps. See some of my SteemWhales info: