googolplex

A googolplex is 10^^googol

This makes it so inconceivably huge that its not useful for actually counting anything.

You could never write this number down, because the universe does not even contain 10¹⁰⁰ particles, let alone enough atoms to make up the approx. 10⁹⁵ pages it would require to write down...

[Editor's note (Gz): removed response to another (deleted) writeup; left this little tidbit]