Unnongentillion

An unnongentillion is equal to \(10^{2706}\) in the short scale and \(10^{5406}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 901st -illion number.
In the long scale, \(10^{2706}\) is called unquinquagintaquadringentillion.
==Approximations==
For the short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{2706}\) (exact) 	\(1\times10^{2706}\) (exact)
Arrow notation 	\(10\uparrow 2706\) (exact) 	\(10\uparrow 2706\) (exact)
Steinhaus-Moser Notation 	913[3] 	914[3]
Chained arrow notation 	\(10\rightarrow 2706\) (exact) 	\(10\rightarrow 2706\) (exact)
Taro's multivariable Ackermann function	A(3,8986) 	A(3,8987)
BEAF & Bird's array notation 	{10,2706} (exact) 	{10,2706} (exact)
Hyper-E notation 	E2706 (exact) 	E2706 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(9)\) 	\(s(1)^3(\lambda x.x+1)(10)\)
m(n) map 	m(1)(913) 	m(1)(914)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(8976)\) 	\(f_2(8977)\)
Hardy hierarchy 	\(H_{\omega^2}(8976)\) 	\(H_{\omega^2}(8977)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 2+\omega^2 7+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 2+\omega^2 7+6}}(10)\) (exact)
For the long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{5406}\) (exact) 	\(1\times10^{5406}\) (exact)
Arrow notation 	\(10\uparrow 5406\) (exact) 	\(10\uparrow 5406\) (exact)
Steinhaus-Moser Notation 	1676[3] 	1677[3]
Chained arrow notation 	\(10\rightarrow 5406\) (exact) 	\(10\rightarrow 5406\) (exact)
Taro's multivariable Ackermann function	A(3,17955) 	A(3,17956)
BEAF & Bird's array notation 	{10,5406} (exact) 	{10,5406} (exact)
Hyper-E notation 	E5406 (exact) 	E5406 (exact)
s(n) map 	\(s(1)^3(\lambda x.x+1)(10)\) 	\(s(1)^3(\lambda x.x+1)(11)\)
m(n) map 	m(1)(1676) 	m(1)(1677)
Bashicu matrix system 	(0)(1)[3] 	(0)(1)[4]
Fast-growing hierarchy 	\(f_2(17944)\) 	\(f_2(17945)\)
Hardy hierarchy 	\(H_{\omega^2}(17944)\) 	\(H_{\omega^2}(17945)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3 5+\omega^2 4+6}}(10)\) (exact)	\(g_{\omega^{\omega^3 5+\omega^2 4+6}}(10)\) (exact)
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Numbers with 1000 to 1000000 digits
Category:Powers of 10 with squarefree exponent
Category:Tier 1 -illion numbers