User blog comment:Flavio61/Louis Epstein number list/@comment-27513631-20160114224032

I'm not going to take a proper look at something that... messy. There are more elegant ways of representing much larger numbers, and that website seems to forget such exists. Elegance is paramount, kinda, and that lacks any of it.

The absolute upper bound is $$\varepsilon_0$$, and I'd be surprised if it's much beyond $$\omega^{\omega^\omega}$$.

If you made the site, and don't know what the heck those ordinals mean, then it's probably for the best to find out until you understand them, and then look at the fast growing hierarchy.

(Assuming, of course, you mean the site mentioned in the other blog post, and not something else.)