Gargoogol-plexed

Gargoogol-plexed is equal to 1010 200, or 10 to the power of gargoogol. When evaluating gargoogolplex, the -plex suffix is evaluated first, making the result the square of a googolplex. If the gar- prefix is evaluated first, the result is 10 to the power of googol-squared, which is a much larger number (it is equal to googolplex to the power of googol, while gargoogolplex is googolplex to the power of 2).

Username5243 calls this number gooducolplex, and it's equal to 10[1]10[1]200 in Username5243's Array Notation.