I wanted to note that this only applies to 10 10 100 If googolplex means 10 10 100 then it would be a completely different number This is because what is inside the parenthesis needs to get evaluated first In this case it would be 10 1 followed by 100 zeroes By using a little bit of mathematical induction you can conclude that it has a googol amount of zeroes For instance 10 7 has 7 zeroes 10 10000 has 10000 zeroes and therefore 10 10 100 has 10 100 googol amount of zeroes But it seems like the article doesn t put the parenthesis