Unquinquagintillion

An unquinquagintillion is equal to 10156 in America, or 10306 in France and Germany by Conway-Wechsler system.Conway and Guy. (1995) "The book of Numbers" CopernicusThe Conway-Wechsler SystemExtensions to the -illions I: Henkle, Conway, and RowlettFish. Conway's zillion numbers, July 25, 2021
Sbiis Saibian says that Jonathan Bowers coined unquinquagintillion for this number.
In the long scale which is commonly used in France and Germany, 10156 is called sesvigintillion.
== Decimal expansion ==
In short scale:
In long scale:
== Approximations ==
For short scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{156}\) 	\(1\times10^{156}\)
Arrow notation 	\(10\uparrow156\) 	\(10\uparrow156\)
Steinhaus-Moser Notation 	81[3] 	82[3]
Copy notation 	9[156] 	1[157]
Chained arrow notation 	\(10→156\) 	\(10→156\)
Taro's multivariable Ackermann function	A(3,515) 	A(3,516)
Pound-Star Notation 	#*((1063))*8 	#*((1064))*8
BEAF 	{10,156} 	{10,156}
Hyper-E notation 	E156 	E156
Bashicu matrix system 	(0)(0)(0)(0)(0)[74989] 	(0)(0)(0)(0)(0)[74990]
Bird's array notation 	{10,156} 	{10,156}
Hyperfactorial array notation 	99! 	100!
Strong array notation 	s(10,156) 	s(10,156)
Fast-growing hierarchy 	\(f_2(509)\) 	\(f_2(510)\)
Hardy hierarchy 	\(H_{\omega^2}(509)\) 	\(H_{\omega^2}(510)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^2+\omega5+6}}(10)\)	\(g_{\omega^{\omega^2+\omega5+6}}(10)\)
For long scale:
Notation 	Lower bound 	Upper bound
Scientific notation 	\(1\times10^{306}\) 	\(1\times10^{306}\)
Arrow notation 	\(10\uparrow306\) 	\(10\uparrow306\)
Steinhaus-Moser Notation 	142[3] 	143[3]
Copy notation 	9[306] 	1[307]
Taro's multivariable Ackermann function	A(3,1013) 	A(3,1014)
Pound-Star Notation 	#*((437))*11 	#*((438))*11
BEAF 	{10,306} 	{10,306}
Hyper-E notation 	E306 	E306
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)[60429] 	(0)(0)(0)(0)(0)(0)[60430]
Hyperfactorial array notation 	169! 	170!
Fast-growing hierarchy 	\(f_2(1\,006)\) 	\(f_2(1\,007)\)
Hardy hierarchy 	\(H_{\omega^2}(1\,006)\) 	\(H_{\omega^2}(1\,007)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^23+6}}(10)\)	\(g_{\omega^{\omega^23+6}}(10)\)
==List of prefixed numbers derived from quinquagintillion==
Name 	Short scale	Long scale
unquinquagintillion 	10156 	10306
duoquinquagintillion 	10159 	10312
tresquinquagintillion 	10162 	10318
quattuorquinquagintillion	10165 	10324
quinquinquagintillion 	10168 	10330
sesquinquagintillion 	10171 	10336
septenquinquagintillion 	10174 	10342
octoquinquagintillion 	10177 	10348
novenquinquagintillion 	10180 	10354
== Sources ==
== See also ==
Category:Numbers
Category:Class 2
Category:Illion
Category:Quinquagintillion
Category:Numbers with 101 to 999 digits