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Giaxul is equal to 200![200], using Hyperfactorial array notation.[1] It also can be written as 200![1,2]. The term was coined by Lawrence Hollom.

## Etymology

The name of this number is based on the word "giant" and the number "faxul".

## Approximations in other notations

Notation Approximation
Chained arrow notation $$200\rightarrow200\rightarrow199\rightarrow200$$
Notation Array Notation $$(200\{3,3\}200)$$
Hyper-E notation $$\textrm E200\#\#200\#\#200$$
BEAF $$\{200,200,199,2\}$$
X-Sequence Hyper-Exponential Notation $$200\{X*2\}199$$
Fast-growing hierarchy $$f_{\omega+199}(200)$$
Hardy hierarchy $$H_{\omega^{\omega+199}}(200)$$
Slow-growing hierarchy (using this system of fundamental sequences) $$g_{\varphi(1,198,0)}(200)$$