Answer:
The hecta-ennaxis (formerly hecta-ennaksys) is equal to E1#1#1#1#1#1#1#100 in Hyper-E notation.[1] The term was coined by Sbiis Saibian. In up-arrow notation, this number is equal to \(10\uparrow^8 100\).
Aarex Tiaokhiao calls this number ogdagol.[2]
Username5243 calls this number Ottoogol, and it's equal to 10[8]100 in Username5243's Array Notation.[3]
