A googolplex is the number 10googol, equivalent to 1010100 or 10Ten duotrigintillion or 1010,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. Like the number googol, googolplex was thought of by Milton Sirotta, the nephew of mathematician Edward Kasner. The company Google named their headquarters, the Googleplex, after the number. A googolplexplex / goggolplexian / goggolduplex / goggolplexsquared is a 1 followed by a Googolplex amount of zeros which is 10googolplex (101010100 ).
A goggolplexianth is represented as 10googolplexian.