Icosillion

The icosillion (also called icocillion or ducontillionhttp://www.bioreference.net/encyclopedia/wikipedia/n/na/names_of_large_numbers.html) is equal to \(10^{3\left(10^{60}\right)+3}\) or \(10^{3\text{ novemdecillion }3}\).Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers. It is 3×1060+4 digits long.
Icosillion is also known as one millia^20tillion according to Landon Curt Noll's The English name of a number.
== Etymology ==
The name of this number is based on the suffix "-illion" and the prefix "icosa-" (from Greek 20).
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow60)\) 	\(1000\uparrow(1+10\uparrow60)\)
Down-arrow notation 	\(1000\downarrow\downarrow21\) 	\(536\downarrow\downarrow23\)
Steinhaus-Moser Notation 	37[3][3] 	38[3][3]
Copy notation 	2[2[61]] 	3[3[61]]
H* function 	H(H(19)) 	H(H(19))
Taro's multivariable Ackermann function	A(3,A(3,199)) 	A(3,A(3,200))
Pound-Star Notation 	#*((1))*(2)*91 	#*((1))*(7,3,1,4)*6
BEAF 	{1000,1+{10,60}} 	{1000,1+{10,60}}
Hyper-E notation 	E(3+3E60) 	E(3+3E60)
Bashicu matrix system 	(0)(1)[14] 	(0)(1)[15]
Hyperfactorial array notation 	(46!)! 	(47!)!
Fast-growing hierarchy 	\(f_2(f_2(195))\) 	\(f_2(f_2(196))\)
Hardy hierarchy 	\(H_{\omega^22}(195)\) 	\(H_{\omega^22}(196)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega6}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega6}3+3}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 3
Category:Greek-based name
Category:Middle class 3
Category:Tier 2 -illion numbers