The jovillion is equal to \(10^{3 \cdot 10^{3 \cdot 10^{3 \cdot ext{sextillion}}} + 3}\) , or \(10^{3 \cdot 10^{3 \cdot 10^{3 \cdot 10^{21}}} + 3}\). The term was coined by Jonathan Bowers. Tamara calls this number neptillion, a name inspired by the word "Neptune".