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Not to be confused with Octa-exaxis.

Octa-expanxis is equal to 10{{1}}8 (10 expanded to 8).[1] This term was coined by the user SeveralLegend9998.

Approximations in other notations[]

Notation Approximation
BEAF and Bird's array notation \(\{10,8,1,2\}\) (exact)
X-Sequence Hyper-Exponential Notation \(10\{X+1\}8\) (exact)
Hyperfactorial array notation \(8![2]\)
Fast-growing hierarchy \(f^7_{\omega}(10)\)
Hardy hierarchy \(H_{\omega^\omega7}(10)\)
Slow-growing hierarchy \(g_{\Gamma_0[8]}(10)\)

Sources[]

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