Grand grand grand grand tethrathoth

The grand grand grand grand tethrathoth is equal to E100#^#^#...#^#^#100 (grand grand grand tethrathoth #'s) = E100#^^#100#5 in Extended Cascading-E Notation. The term was coined by Sbiis Saibian. In Nested Cascading-E Notation, this number is equal to E100#^^#^#100#5.

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