Octecillion

The octecillion is equal to \(10^{3\left(10^{54}\right)+3}\) or \(10^{3\text{ septendecillion }3}\).Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers. It is 3×1054+4 digits long.
Octecillion is also known as one millia^18tillion 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 "octeco-".
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow54)\) 	\(1000\uparrow(1+10\uparrow54)\)
Down-arrow notation 	\(1000\downarrow\downarrow19\) 	\(74\downarrow\downarrow30\)
Steinhaus-Moser Notation 	34[3][3] 	35[3][3]
Copy notation 	2[2[55]] 	3[3[55]]
H* function 	H(H(17)) 	H(H(17))
Taro's multivariable Ackermann function	A(3,A(3,179)) 	A(3,A(3,180))
Pound-Star Notation 	#*((1))*(1,2,1,7)*5 	#*((1))*(2,2,1,7)*5
BEAF 	{1000,1+{10,54}} 	{1000,1+{10,54}}
Hyper-E notation 	E(3+3E54) 	E(3+3E54)
Bashicu matrix system 	(0)(1)[13] 	(0)(1)[14]
Hyperfactorial array notation 	(42!)! 	(43!)!
Fast-growing hierarchy 	\(f_2(f_2(175))\) 	\(f_2(f_2(176))\)
Hardy hierarchy 	\(H_{\omega^22}(175)\) 	\(H_{\omega^22}(176)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega5+4}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega5+4}3+3}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 3
Category:Middle class 3
Category:Tier 2 -illion numbers