Zettinzet

Zettinzet is equal to \(f_{\eta_0[10^{21}+1]}(10)\) using the fast-growing hierarchy.My system of number names (FGS) - Traveling To The Infinity The term was coined by wiki user Denis Maksudov.
== Etymology ==
The 3 parts of the name, "zetto", "in" and "zet", mean \(10^{21}\), the "in-" operation and \(\zeta\)-ordinals respectively, which form \(\eta_0\)\([10^{21}+1]\) (i.e. \(10^{21}\) more insertions of \(\zeta\)) when concatenated backwards. So the full name indicates the ordinal index of the FGH.
== Sources ==
Category:Numbers
Category:Numbers by Denis Maksudov
Category:10-based FGH numbers
Category:Binary phi level
Category:-zet