numbers as series title

https://www.librarything.com/series currently has a lot of new series, four digits, no connections that I can see.
I am monolingual and don't have the mental energy to try and find connections to get a better title, presuming that they should all be the numbers of a single series.

Or possibly some DDC like code? Either way, this does look like someone not understanding the function.

>1 Avron:

Looking at the person's libraries these are all tagged hadith (he has some tagged as hadith without series though) - so I guess that they are the hadith number. It certainly looks like they don't understand the function.

Joined on Sunday. Certainly doesn't understand.

Is someone leaving a quick note on their page - just cleaning won't do much good - they will either add them again or decide that someone ruined their data.