At work, we've been working to reduce the number of test cases and it looks like we have just a bit over 9,000 [1] (it's an Internet meme-thing [2]). It's over the 5,000 our manager was expecting, but it's far less than the 2,359,296 theoretical maximum number of test cases [3] we could have had.
Now, it's off to document all 9,120 cases …
[1] https://www.youtube.com/watch?v=SiMHTK15Pik