Dekaelgathordeus is equal to E100#^(#^#^10*#^#^10)100 using Cascading-E Notation.[1] The term was coined by Sbiis Saibian.


The name of this number is based on the suffix "-deus" and the number "dekaelgathor".

Approximations in other notations

Notation Approximation
BEAF \(\{100,100 (0,0,0,0,0,0,0,0,0,0,2) 2\}\)
Bird's array notation \(\{100,100 [1,1,1,1,1,1,1,1,1,1,3] 2\}\)
Fast-growing hierarchy \(f_{\omega^{\omega^{(\omega^{10}) 2}}}(100)\)
Hardy hierarchy \(H_{\omega^{\omega^{\omega^{(\omega^{10}) 2}}}}(100)\)
Slow-growing hierarchy \(g_{\theta(\Omega^{\Omega^{\Omega^{10} + \Omega^9 \omega}})}(100)\)


  1. Saibian, Sbiis. 4.3.5 Cascading-E NumbersOne to Infinity. Retrieved 2016-09-09.
Community content is available under CC-BY-SA unless otherwise noted.