Hayden-Giant

Hayden-Giant is equal to E100(#^^#)^(#^^#)^(#^^#)^ ... (#^^#)^#100 (100 #^^#'s) in Extended Cascading-E Notation. The term was coined by googology user HaydenTheGoogologist2009.Hayden's Big Numbers. Retrieved 2022-06-23. It is slightly larger than terrible tethrathoth.
== Approximations==
Notation 	Approximation
Bird's array notation 	\(\{100,100 [2 [1 \backslash 3] 2 \backslash 2] 2\}\)
X-Sequence Hyper-Exponential Notation	\(100\{((X\uparrow\uparrow X)\uparrow\uparrow X)^X\}100\)
Fast-growing hierarchy 	\(f_{(\varepsilon_0\uparrow\uparrow100)^{\omega}}(100)\)
Hardy hierarchy 	\(H_{(\varepsilon_0\uparrow\uparrow100)^{\omega}}(100)\)
Slow-growing hierarchy 	\(g_{\vartheta((\varepsilon_{\Omega 2 + 1})^\omega)}(101)\)
==Sources==
Category:Numbers
Category:Numbers by HaydenTheGoogologist2009
Category:Extended Cascading-E numbers
Category:Epsilon level
Category:Eponymous numbers