What?

It isn't anyone's profile number. It's a random number in a broken profile URL.

It's a coincidence that any profile exists with that number. It's meaningless too, you could use ANY number.

Sure you could. But do a google search on this one and compare it with a google search for a random number of similar length. Besides you can see from the search that it is this number that is used quite often with this trick

People have copied the URL, that's all. Similar URLs have also been copied.

What is your point?

I was just saying that it's interesting that this number has such a history. I didn't expect it. And from your first reply it seems you didn't either. It is a profile ID not a random number and it has been used multiple times for this exact trick