11,329
pages

Megahugexul is equal to Kilohugexul![200(1)200] or ((200![200(1)200])![200(1)200])![200(1)200], using Hyperfactorial array notation. The term was coined by Lawrence Hollom.[1]

## Contents

### Etymology

The name of this number is based on SI prefix "mega-" and the number "hugexul".

### Approximations

Notation Approximation
Bird's array notation $$\{200,4,201[1[1\neg3]200]2\}$$
Hierarchical Hyper-Nested Array Notation $$\{200,4,201[1[1/2\sim2]200]2\}$$
BEAF $$\{200,4,201((X \uparrow\uparrow)^X 199)2\}$$[2]
Extended Cascading-E Notation E(200)200(((#^^^#)^^^#)^^^#...^^^#)198#4 (where there are 199 ^^^#'s)
Fast-growing hierarchy (with this system of fundamental sequences) $$f_{\Gamma_{198}+199}(f_{\Gamma_{198}+199}(f_{\Gamma_{198}+199}(200)))$$
Hardy hierarchy (with this system of fundamental sequences) $$H_{\Gamma_{198}\omega^{199}3}(200)$$
Slow-growing hierarchy $$g_{\theta(\Omega_2+\varphi(\Omega_2,199)+199,\theta(\Omega_2+\varphi(\Omega_2,199)+199,\vartheta(\Omega_2+\varphi(\Omega_2,199)+199)))}(200)$$

### Sources

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