# Googol – One of The Largest Number

Standard

A Googol is the large number ${{10}^{100}}$, that is, the digit 1 followed by one hundred zeros:
10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
It’s also called ten duotrigintillion, ten thousand sexdecillion, and ten sexdecilliard.
Believe it or not, 70! (factorial of 70) is approximately 1.198 googol.

There is also one more thing call googolplex. It’s ${{10}^{googol}}={{10}^{{{10}^{100}}}}$.

Reference:  http://en.wikipedia.org/wiki/Googol