Endektoogol is equal to E100#^(11)100 = E100#^(12)#2 in Extended Hyper-E Notation.[1] The term was coined by Sbiis Saibian. This number belongs to the Dektoogol regiment.


The name of this number is based on the Greek prefix "endeka-" and the number "googol".

Approximations in other notations

Notation Approximation
BEAF \(\{100,100,100,100,100,100,100,100,100,100,100,99\}\)
Hyperfactorial array notation \(100![[1,100],98,9]\)
Fast-growing hierarchy \(f_{(\omega^9) 99}(100)\)
Hardy hierarchy \(H_{\omega^{(\omega^9) 99}}(100)\)
Slow-growing hierarchy \(g_{\varphi(99,0,0,0,0,0,0,0,0,0,0)}(100)\)


  1. Saibian, Sbiis. Extended Hyper-E Numbers. Retrieved 2014-12-30.
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