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Quadruple Centifact is the fourth mixed factorial of 100 or mixed factorial of triple centifact, written as 100**** or 100*4 in multiple mixed factorials. The term was coined by SpongeTechX. It is smaller than {10,10,{10,10,{10,10, {100,101,97}}}} in BEAF, and it is therefore smaller than a boogoltriplex.

## Etymology

The name of this number is based on the word quadruple and the number centifact.

## Approximations in other notations

Notation Approximation
Bird's array notation $$\{10,10,\{10,10,\{10,10,\{100,101,97\}\}\}\}$$
BEAF $$\{10,10,\{10,10,\{10,10,\{100,101,97\}\}\}\}$$
Graham Array Notation $$[10,10,[10,10,[10,10,[100,101,97]]]]$$
Strong Array Notation $$s(10,10,s(10,10,s(10,10,s(100,101,97))))$$
Hyper-E notation $$E100\#\#97\#4$$
Chained arrow notation $$100 \rightarrow 101 \rightarrow (100 \rightarrow 101 \rightarrow (100 \rightarrow 101 \rightarrow (100 \rightarrow 101 \rightarrow 97)))$$
Hyperfactorial array notation $$104![1]![1]![1]![1]$$
Fast-growing hierarchy $$f_{\omega}(f_{\omega}(f_{\omega}(f_{98}(100))))$$
Hardy hierarchy $$H_{\omega^\omega3+\omega^{98}}(100)$$
Slow-growing hierarchy $$g_{\varphi(\varphi(\varphi(\varphi(96,0),0),0),0)}(100)$$

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