User blog comment:Sbiis Saibian/Introduction to Googology/@comment-2600:8800:800:700:D185:FB0A:EC4E:A546-20180321030813/@comment-1605058-20180321090420

Rayo's number takes a googol (or more) symbols to describe it in the language of set theory. You can describe it in fewer symbols if you use different language (like English).