Astragol

In pound-star notation, the Astragol is equal to #*(10,10)*100.Pound Star Notation Numbers - Almost Infinite (retrieved at 3/10/2021 08:49 UTC) It is equal to 101*1,010101, or about 2.8*10305. The term was coined by SuperJedi224.
==Etymology==
The "Astra-" prefix means "star". The "-gol" ending is primarily a reference to the Googol and its relatives.
==Decimal expansion==
==Approximations==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(2.759\times10^{305}\) 	\(2.76\times10^{305}\)
Arrow notation 	\(598\uparrow110\) 	\(408\uparrow117\)
Steinhaus-Moser Notation 	141[3] 	142[3]
Copy notation 	2[306] 	3[306]
Chained arrow notation 	\(598\rightarrow110\) 	\(408\rightarrow117\)
PlantStar's Debut Notation 	[181] 	[182]
Taro's multivariable Ackermann function	A(3,1011) 	A(3,1012)
BEAF 	{598,110} 	{408,117}
Hyper-E notation 	2E305 	3E305
Bashicu matrix system 	(0)(0)(0)(0)(0)(0)[59225] 	(0)(0)(0)(0)(0)(0)[59226]
Hyperfactorial array notation 	169! 	170!
Bird's array notation 	{598,110} 	{408,117}
Fast-growing hierarchy 	\(f_2(1004)\) 	\(f_2(1005)\)
Hardy hierarchy 	\(H_{\omega^2}(1004)\) 	\(H_{\omega^2}(1005)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega+71}53}(86)\)	\(g_{\omega^{\omega2+7}52}(77)\)
==Sources==
==See Also==
Category:Numbers
Category:Achilles numbers
Category:Class 2
Category:Even numbers
Category:Numbers with 101 to 999 digits
Category:Pound-Star notation numbers