Exillion

Not to be confused with exalillion
Exillion is equal to \(10^{3 \times 10^{3 \times 10^{18}}+3}\), or \(10^{3 \times 10^{3\text{ quintillion}} + 3}\) using the short scale definition of quintillion.Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers.
Tamara coined attillion (not to be confused with Bowers' attillion) for this number.My illions - Large number stuff Retrieved 2021-08-14.
=== Etymology ===
The name of this number is based on the suffix "-illion" and SI prefix "exa-".
=== Approximations in other notations ===
Notation 	Approximation
Up-arrow notation 	\(10 \uparrow (3 \times (10 \uparrow (3 \times (10 \uparrow 18)))+3)\) (exact)
Chained arrow notation	\(10 \rightarrow (3 \times (10 \rightarrow (3 \times (10 \uparrow 18)))+3)\) (exact)
BEAF 	\(\{10,\{3\times \{10,3 \times \{10,18\}\}+3\}\}\) (exact)
Fast-growing Hierarchy	\(f_2^3(57)\)
=== Sources ===
=== See also ===
Category: Tier 3 -illion numbers
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 4