Googology Wiki
Googology Wiki

View full site to see MathJax equation

Hifol is equal to s(10,50,5) using strong array notation, or \(10\uparrow\uparrow\uparrow\uparrow\uparrow50\).[1] The term was coined by Aarex Tiaokhiao.

SURUX EDRIPT calls this number penanta-exaxis.[2]

Approximations in other notations[]

Notation Approximation
Up-arrow notation \(10 \uparrow\uparrow\uparrow\uparrow\uparrow 50\) (exact)
Chained arrow notation \(10 \rightarrow 50 \rightarrow 5 \) (exact)
Hyper-E notation \(\textrm E1\#1\#1\#1\#50\) (exact)
Hyperfactorial array notation \(52!4\)
BEAF \(\{10,50,5\}\) (exact)
Fast-growing hierarchy \(f_6(50)\)
Hardy hierarchy \(H_{\omega^6}(50)\)
Slow-growing hierarchy \(g_{\varphi(4,0)}(50)\)

Sources[]