How many maps does ZDoom support?

I know, one could think that this information could easily be found by browsing the forums. Well, I did exactly that for 20 minutes (both DW.com and ZDoom.org) and I did not find the information (it seems, that it's taken for granted).

So:

I know, ZDoom supports more than 32 maps in a wad. What is the exact maximum?

Maps can have any name in ZDoom, so long as the progression is defined properly in MAPINFO. Therefore, depending on what alphanumeric characters are exactly allowed for Wad entry names, the number of maps you could have is anywhere from 26^8 (208,827,064,576) to 48^8 (28,179,280,429,056).

But you have to keep in mind that some lump names are already taken, like MAPINFO ;)

Hmm. That should suffice for almost every purpose. :-)

Oh good. Now I can get to work on that 28 trillion map MegaWad I always wanted to make.