Ikillion

Ikillion, formerly twentillion, is equal to \(10^{3\times 10^{3\times 10^{60}} + 3}\).Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers.
== Approximations in other notations ==
Notation 	Approximation
Up-arrow notation 	\(10 \uparrow (3 \times (10 \uparrow (3 \times (10 \uparrow 60)))+3)\) (exact)
Chained arrow notation	\(10 \rightarrow (3 \times (10 \rightarrow (3 \times (10 \uparrow 60)))+3)\) (exact)
BEAF 	\(\{10,\{3\times \{10,3 \times \{10,60\}\}+3\}\}\) (exact)
Fast-growing hierarchy	\(f^3_2(195)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 4
Category: Tier 3 -illion numbers