Troifyn is a number equal to 13(76) using Revised Pehan Notation.[1] The term was coined by Licorneuhh.

It can also be described as 1276(76) = 1275(Deufyn)


Notation Approximation
BEAF \(\{76,76,4,2\}\)
Chained arrow notation \(76\rightarrow 76\rightarrow 76\rightarrow 5\)
Hyperfactorial array notation 76![5]
Fast-growing hierarchy \(f_{\omega+4}(76)\)
Hardy hierarchy \(H_{\omega^{\omega+4}}(76)\)
Slow-growing hierarchy (using this system of fundamental sequences) \(g_{\varphi(1,3,0)}(77)\)


  1. Fyn Group | Licorneuhh's numbers site (retrieved at UTC 02:11 09/01/2021)
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