And can theoretically count to! Practically everybody knows that a googolplex is a really big number™, but what number do you actually know how to get to? I can get all the way through the tredecillions (the thirteenth -illion, 1ᴇ42), but then I get confused with the prefixes for 1ᴇ45 and everything goes downhill from there. What about you guys? :o EDIT: Apparently there's a short scale and a long scale (which Germany and France uniquely use in English); on the long scale, the -illions are even bigger!