22,583 subscribers a community for 2 years, 2 monthslast post today [+]
What is the Sub?
It's a math joke. If you don't like math you can leave now. If you do, and want to learn about it, here you go.
When you put an '!' next to a number, it makes it look like a factorial. Sometimes people do this on accident, as you can see in all the posts in the sub.
No non-unexpected factorials. Those go in /r/expectedfactorial!
Don't be a troll/scum.
Common sense, mods can punish for any reason.
Don't post the full numbers of a factorial, instead post a wolfram alpha link!
No NSFW links!