Hydrillion

Hydrillion is the tier 6 number, coined by under the name Tamara. the number is equal to \(10^{3\left(10^{3\left(10^{3\left(10^{3\left(10^{3\left(10^{3}\right)\right)\right)\right)+3}\)

According to Tamara, the name of the number was inspired by the name of the first element "hydrogen".

(10^{3\left(10^{3000}\right)+3}\)