Tetrecillion

The tetrecillion is equal to \(10^{3\left(10^{42}\right)+3}\) or \(10^{3\text{ tredecillion }3}\). The term was coined by Jonathan Bowers. It is 3×1042+4 digits long.

Tetrecillion is also known as one millia^14tillion according to Landon Curt Noll's The English name of a number.

Etymology
The name of this number is based on the suffix "-illion" and the prefix "tetreco-".