Petotetrommthet

Petotetrommthet is equal to \(f_{\theta(\Omega \uparrow\uparrow 10^{15})}(10)\)My system of number names (FGS) - Traveling To The Infinity using the fast-growing hierarchy and Feferman's \(\theta\)-function with fundamental sequences using equalities to outputs of Buchholz's function. The term was coined by wiki user Denis Maksudov.
It is also equal to \(f_{\psi(\Omega \uparrow\uparrow (10^{15}+1))}(10)\) using Buchholz's psi-function.
== Etymology ==
The 4 parts of the name, "peto", "tetr", "omm" and "thet", mean \(10^{15}\), tetration, \(\Omega\) and \(\theta\) function respectively, which form \(\theta(\Omega\uparrow\uparrow10^{15})\) 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:Higher computable level