Googol-ex-terrible tethrathoth

Googol-ex-terrible tethrathoth is equal to E100#^^#>#(1+E100) using Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(\{100,\text{googol}+1 (X \uparrow\uparrow (X^2)) 2\}\)Using particular notation \(\{a,b (A) 2\} = A\ \&\ a\) with prime b.
Bird's array notation 	\(\{100,\text{googol}+1 [1 \backslash 1,2] 2\}\)
X-Sequence Hyper-Exponential Notation	\(100\{X>X\}\text{googol}+1\)
Fast-growing hierarchy 	\(f_{\varepsilon_{\omega}}(\text{googol})\)\(\approx f_{\varepsilon_\omega}(f_2(324))\)
Hardy hierarchy 	\(H_{\varepsilon_{\omega}}(\text{googol})\)
Slow-growing hierarchy 	\(g_{\vartheta(\varepsilon_{\Omega \omega})}(\text{googol}+1)\)
== Sources ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Epsilon level