Unviginticentillion

An unviginticentillion is equal to \(10^{366}\) in the short scale and \(10^{726}\) in the long scale by the and 's naming systemConway and Guy. (1995) "The book of Numbers" Copernicus as it is the 121st -illion number.
In the long scale, \(10^{366}\) is called unsexagintillion.
This number is also called primo-vigesmo-centillion, which is part of a naming scheme first proposed by Professor Henkle in 1904 and subsequently popularized in 1968 in an article by Dmitri Borgmann.Robert Munafo More Conway-Wechsler Number NamesSbiis Saibian, 2.4.5 Professor Henkle's One Million illions - Large Numbers In Henkles scheme the Latin ordinals represent their corresponding values, while the cardinals represent multipliers to be applied primarily to the milli- prefix.
Professor Henkle's system is notable for being the earliest known attempt to extend the zillion series to the millionth member. It may also have served as the impetus and blue print later systems, including the popular Conway & Guy naming scheme.
This number is also called cenunvigintillion.English names of the first 10000 powers of 10 (American system)English names of the first 10000 powers of 10 (European system)
==Approximations==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{366}\) 	\(1\times10^{366}\)
Arrow notation 	\(10\uparrow366\) 	\(10\uparrow366\)
Steinhaus-Moser Notation 	165[3] 	166[3]
Copy notation 	9[366] 	1[367]
Taro's multivariable Ackermann function	A(3,1212) 	A(3,1213)
Pound-Star Notation 	#*((232))*12 	#*((233))*12
BEAF 	{10,366} 	{10,366}
Hyper-E notation 	E366 	E366
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)[723] 	(0)(0)(0)(0)(0)(0)(0)[724]
Hyperfactorial array notation 	196! 	197!
Fast-growing hierarchy 	\(f_2(1\,205)\) 	\(f_2(1\,206)\)
Hardy hierarchy 	\(H_{\omega^2}(1\,205)\) 	\(H_{\omega^2}(1\,206)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^23+\omega6+6}}(10)\)	\(g_{\omega^{\omega^23+\omega6+6}}(10)\)
For long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{726}\) 	\(1\times10^{726}\)
Arrow notation 	\(10\uparrow726\) 	\(10\uparrow726\)
Steinhaus-Moser Notation 	294[3] 	295[3]
Copy notation 	9[726] 	1[727]
Taro's multivariable Ackermann function	A(3,2408) 	A(3,2409)
Pound-Star Notation 	#*((1086))*16 	#*((1087))*16
BEAF 	{10,726} 	{10,726}
Hyper-E notation 	E726 	E726
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)(0)(0)[685] 	(0)(0)(0)(0)(0)(0)(0)(0)[686]
Hyperfactorial array notation 	344! 	345!
Fast-growing hierarchy 	\(f_2(2\,400)\) 	\(f_2(2\,401)\)
Hardy hierarchy 	\(H_{\omega^2}(2\,400)\) 	\(H_{\omega^2}(2\,401)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^27+\omega2+6}}(10)\)	\(g_{\omega^{\omega^27+\omega2+6}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Illion
Category:Class 2
Category:Powers of 10 with squarefree exponent
Category:Numbers with 101 to 999 digits
Category:Tier 1 -illion numbers