Berlin Wall

The Berlin Wall (named after the during World War II) is equal to E100#^^##100,000,000 = E100#^^#>#^^#>#^^#>...>#^^#>#^^#100 (100,000,000 #^^#'s) in Extended Cascading-E Notation. The term was coined by Sbiis Saibian.
== Approximations in other notations ==
Notation 	Approximation
BEAF 	\(X \uparrow\uparrow X \uparrow 2 \&\ 100,000,001\)
Bird's array notation 	\(\{100,100000000 [1 \backslash 1 \backslash 2] 2\}\)
Hyperfactorial array notation	\(100,000,000![1,1,1,1,1,2]\)
Fast-growing hierarchy 	\(f_{\zeta_0}(99,999,999)\)
Hardy hierarchy 	\(H_{\zeta_0}(100,000,000)\)
Slow-growing hierarchy 	\(g_{\vartheta(\zeta_{\Omega+1})}(100,000,000)\)
==Sources==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Epsilon level