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Bigrand Hugetrixul is equal to (...((200![200(1)200(1)200(1)200])![200(1)200(1)200(1)200])...![200(1)200(1)200(1)200])![200(1)200(1)200(1)200] (with Grand Hugetrixul parentheses), using Hyperfactorial array notation. The term was coined by Lawrence Hollom.[1]

## Contents

### Etymology

The name of this number is based on prefix "bi-" and the number "Grand Hugetrixul".

### Approximations

Notation Approximation
Bird's array notation $$\{200,4,202[1[1\neg3]200[1\neg3]200[1\neg3]200]2\}$$
Hierarchical Hyper-Nested Array Notation $$\{200,4,202[1[1/2\sim2]200[1/2\sim2]200[1/2\sim2]200]2\}$$
BEAF $$\{200,4,202(\{X,\{X,\{X,199X,1,4\}+199X,1,3\}+199X,1,2\})2\}$$[2]
Fast-growing hierarchy $$f_{\Gamma_{\varphi(2,0,\varphi(3,0,198)+199)+199}+200}^2(f_{\Gamma_{\varphi(2,0,\varphi(3,0,198)+199)+199}+199}(200))$$
Hardy hierarchy $$H_{\Gamma_{\varphi(2,0,\varphi(3,0,198)+199)+199}\omega^{200}2+\Gamma_{\varphi(2,0,\varphi(3,0,198)+199)+199}\omega^{199}}(200)$$
Slow-growing hierarchy $$g_{\vartheta(\Gamma_{\varphi(2,0,\varphi(3,0,\Omega+199)+199)+199}+201)}(3)$$

### Sources

1. Lawrence Hollom's large number site
2. Using particular notation $$\{a,b (A) 2\} = A \&\ a$$ with prime b.