A googol is the large number 10¹⁰⁰. In decimal notation, it is written as the digit 1 followed by one hundred zeroes: 10, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000, ​000,... Wikipedia