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The Great Wall (named after the Chinese barrier and also as an upgrade for the Berlin Wall) is equal to E100#^^#^^#>#^^#^^#>#^^#^^#>...>#^^#^^#>#^^#^^#100 (10,000,000,000 #^^#^^#'s) in Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian.

Unlike the Berlin Wall, due to order of operations, it should be evaluated as E100#^^(#^^#>#^^(#^^#>#^^(#^^#>...>#^^(#^^#>#^^(#^^#>#^^(#^^#>#^^#^^#))))))100 with 10,000,000,000 ^^#'s, making this number become much larger, and can be approximated as E100#^^^#10,000,000,002.

Approximations in other notations[]

Notation Approximation
BEAF \(X \uparrow\uparrow\uparrow 10,000,000,002\ \&\ 100\)
Bird's array notation \(\{100,10000000002[1[1\neg3]2]2\}\) (Nested Hyper-Nested Array Notation)

\(\{100,10000000002[1[1\backslash2\neg2]2]2\}\) (Hierarchial Hyper-Nested Array Notation)

Hyperfactorial array notation \(10,000,000,002![1(1)2]\)
Fast-growing hierarchy (using this system of fundamental sequences) \(f_{\varphi(1,0,0)}(10,000,000,001)\)
\(=f\)\(_{\Gamma_{0}}\)\((10,000,000,001)\)
Hardy hierarchy \(H_{\Gamma_{0}}(10,000,000,002)\)
Slow-growing hierarchy (using this system

of fundamental sequences)

\(g_{\psi_0(\Omega_2^{\Omega_2})}(10,000,000,002)\)

Sources[]

  1. Saibian, Sbiis. 4.3.3 - Forging Extended Cascading-E Numbers Part I. Retrieved 2014-10-01.
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