Astillion

The astillion is equal to \(10^{3 \cdot 10^{3 \cdot 10^{3 \cdot \text{trillion}}} + 3}\) Illion Numbers by Jonathan Bowers, or \(10^{3 \cdot 10^{3 \cdot 10^{3 \cdot 10^{12}}} + 3}\). The term was coined by Jonathan Bowers. The number is slightly smaller and comparable to the upper limit of the Poincaré recurrence time.
== Etymology ==
The name of this number is based on the word "asteroid" and the suffix "-illion".Jonathan Bowers' 4-tiered -illion Series - Large Numbers by Sbiis Saibian
== Expressions in other notations ==
Notation 	Expression
Up-arrow notation 	\(10 \uparrow (3 \times (10 \uparrow (3 \times (10 \uparrow (3\text{ trillion}))))+3)\)
Chained arrow notation 	\(10 \rightarrow (3 \times (10 \rightarrow (3 \times (10 \uparrow (3\text{ trillion}))))+3)\)
BEAF 	\(\{10,\{3\times \{10,3 \times \{10,3\text{ trillion}\}\}+3\}\}\)
Munafo's ASCII-lexicographic ordering	p3_e012_3000000000000477
Fast-growing hierarchy 	\(f^4_2(38)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 5
Category:Astronomical object-based name
Category:Tier 4 -illion numbers