Thrice-tethrasecunda

Thrice-tethrasecunda is equal to E100((#^^##)^^##)^^##100 = E100((#^^##)^^##)^^#>((#^^##)^^##)^^#>...>((#^^##)^^##)^^#>((#^^##)^^##)^^#100 (with 100 ((#^^##)^^##)^^#'s) using Extended Cascading-E Notation.Sbiis Saibian, Extended Cascading-E Numbers Part I - Large Numbers The term was coined by Sbiis Saibian. This number belongs to the tethracross regiment.
== Approximations in other notations ==
Notation 	Approximation
Bird's array notation 	\(\{100,100[1 \backslash 1 \backslash 4]2\}\)
Fast-growing hierarchy 	\(f_{\zeta_2}(100)\)
Hardy hierarchy 	\(H_{\zeta_2}(101)\)
Slow-growing hierarchy (Using this system of fundamental sequences)	\(g_{\psi_0(\Omega_2^23)}(100)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Extended Cascading-E numbers
Category:Binary phi level
Category:Tethracross series