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Ecetondex is equal to E303#1#2= E303#(E303) = EE...EE303 (10303 E's) = 101010...10303 (10303 10's), using Hyper-E notation.[1] The term was coined by Sbiis Saibian. This number belongs to the grangol regiment.

## Contents

### Etymology

The 2 parts of the name, "eceton", "dex", means 10303 and the power tower of 10 respectively,which formed E303#1#2 when concentrated from left to right. So the full name indicates how the number is constructed.

### Approximations

Notation Approximation
Arrow notation $$141↑↑(\text{centillon}+1)$$
BEAF $$\{ 141,\text{centillion}+1,2 \}$$
Bird's array notation $$\{ 141,\text{centillion}+1,2 \}$$
Chained arrow notation $$141 \rightarrow (\text{centillion}+1) \rightarrow 2$$
Fast-growing hierarchy $$f_3(f_2(996))$$
Hardy hierarchy $$H_{\omega^3+\omega^2}(996)$$
Slow-growing hierarchy $$g_{\varepsilon_{\omega^{\omega}}}(141)$$

### Sources

Main article: centillion
Eceton series: eceton (= centillion) · ecetonplex · ecetonduplex · ecetontriplex · ecetonquadriplex · ecetonquintiplex
Ecetondex series: ecetondex · ecetondudex · ecetontridex · ecetonquadridex · ecetonquintidex
Ecetonthrex series: ecetonthrex · ecetonduthrex
Ecetontetrex series: ecetontetrex · ecetondutetrex
Ecetonpentex series: ecetonpentex · ecetondupentex
Ecetonhex series: ecetonhex · ecetonduhex
Ecetonheptex series: ecetonheptex · ecetonduheptex
Ecetonoctex series: ecetonoctex · ecetonduoctex
Ecetonennex series: ecetonennex · ecetonduennex
Ecetondecex series: ecetondecex · ecetondudecex
Googol — Greagol
Greagol — Gugold
Throogol — Godgahlah-ex-grand godgahlah