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The ohmygosh-ohmygosh-ohmygooosh (also called godsgodgul-centurion) is equal to E100#{#{#}#}#100=E100#{#{100}#}#100=E100{#,3,1,2}100 in Hyper-Extended Cascading-E Notation.[1] The term was coined by Sbiis Saibian. It is comparable to Cookie Fonster's humongulusplex.

## Etymology

The name refers both to an exclamation you might hear one say when trying to comprehend this number, and also to a phrase commonly said by Rainbow Dash[3] in the show My Little Pony: Friendship is Magic, which Saibian watched at the time of coining this number.

## Approximations in other notations

Notation Approximation
Bird's array notation $$\{100,99 [1 [1 [2 \neg 3] 2 \neg 3] 2] 2\}$$
Fast-growing hierarchy $$f_{\varphi(\varphi(\omega,0,0),0,0)}(99)$$
Hardy hierarchy $$H_{\varphi(\varphi(\omega,0,0),0,0)}(100)$$
Slow-growing hierarchy $$g_{\theta_{\Omega_2^{\theta_{\Omega_2^\omega}(0)}}(0)}(100)$$