Grand grand grand tethrathoth

The grand grand grand tethrathoth is equal to E100#^#^#...#^#^#100 (grand grand tethrathoth #'s) = E100#^^#100#4 in Extended Cascading-E Notation. The term was coined by Sbiis Saibian. In Nested Cascading-E Notation, this number is equal to E100#^^#^#100#4.

Etymology
The name of this number is based on the word "grand" and the number "grand grand tethrathoth".