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Not to be confused with gijillion.

The gigillion is equal to $$10^{3 \cdot 10^{3,000,000,000}+3}$$, or $$10^{3 \cdot 10^{3 \cdot \text{billion}} +3}$$ using the short scale definition of billion.[1][2] The term was coined by Jonathan Bowers.

## Contents

### Etymology

The name of this number is based on the suffix "-illion" and SI prefix "giga-".

### Expressions in other notations

Notation

Expression

Up-arrow notation $$10 \uparrow (3 \times (10 \uparrow 3,000,000,000)+3)$$ (exact)
Chained arrow notation $$10 \rightarrow (3 \times (10 \rightarrow 3,000,000,000)+3)$$ (exact)
BEAF $$\{10,\{3\times \{10,3000000000\}+3\}\}$$ (exact)