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Quintgrand expofaxul is equal to ((...(200!1)!1...)!1)!1 (with quadgrand expofaxul parentheses) in Hyperfactorial array notation.[1] The term was coined by Lawrence Hollom.

## Etymology

The name of this number is based on Latin prefix "quint-" and the number "grand expofaxul".

## Approximations

Notation Approximation
Hyper-E notation $$\textrm E10\#(\textrm E10\#198)\#6$$
Up-arrow notation $$10 \uparrow\uparrow\uparrow 10 \uparrow\uparrow\uparrow 10 \uparrow\uparrow \uparrow 10 \uparrow\uparrow\uparrow 10 \uparrow\uparrow\uparrow 10 \uparrow\uparrow 198$$
Chained arrow notation $$10 \rightarrow (10 \rightarrow (10 \rightarrow (10 \rightarrow (10 \rightarrow (10 \rightarrow 198 \rightarrow 2) \rightarrow 3) \rightarrow 3) \rightarrow 3) \rightarrow 3) \rightarrow 3$$
BEAF $$\{10,\{10,\{10,\{10,\{10,\{10,198,2\},3\},3\},3\},3\},3\}$$
Fast-growing hierarchy $$f_4(f_4(f_4(f_4(f_4(f_3(200)))))$$
Hardy hierarchy $$H_{(\omega^4)5+(\omega^3)}(200)$$
Slow-growing hierarchy $$g_{\zeta_{\zeta_{\zeta_{\zeta_{\zeta_{\varepsilon_0}}}}}}(200)$$