TREE (3) is a number that appears easily from just playing a simple math game. Yet it is so colossally large that it could not fit into our universe, writes Antonio Padilla


September 9, 2022

TREE(3) is colossal

Photo by John Hayward / Alamy

There are many numbers that quite naturally fit into our daily lives. For example, the number five includes the founding members of the popular British band One Direction, the number 31 million, how many followers they have on Twitter, and the number zero, the number of followers who actually have decent taste in music (sorry!).

But there are also numbers that are important to mathematicians that can never fit into our everyday lives. There are even some that could never fit into the universe. Like TREE(3). I allow…