Googol, << GOO gol, >> is the number written as 1 followed by 100 zeros, or 10 to the power of 100. A googolplex is an even larger number than a googol. It is 10 to the googol power, or 10 multiplied by itself a googol number of times. The term googol was introduced by the American mathematician Edward Kasner. His 9-year-old nephew is said to have invented it.
