Octahectillion

The octahectillion is equal to \(10^{3\times 10^{2,400}+3}\).Sbiis Saibian's large numbers site The term was coined by Sbiis Saibian.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow2400)\) 	\(1000\uparrow(1+10\uparrow2400)\)
Down-arrow notation 	\(1000\downarrow\downarrow801\) 	\(888\downarrow\downarrow815\)
Steinhaus-Moser Notation 	822[3][3] 	823[3][3]
Copy notation 	2[2[2401]] 	3[3[2401]]
H* function 	H(H(799)) 	H(H(799))
Taro's multivariable Ackermann function	A(3,A(3,7972)) 	A(3,A(3,7973))
Pound-Star Notation 	#*((1))*((1085))*20 	#*((1))*((1086))*20
BEAF 	{1000,1+{10,2400}} 	{1000,1+{10,2400}}
Hyper-E notation 	E(3+3E2400) 	E(3+3E2400)
Bashicu matrix system 	(0)(1)[89] 	(0)(1)[90]
Hyperfactorial array notation 	(942!)! 	(943!)!
Fast-growing hierarchy 	\(f_2(f_2(7962))\) 	\(f_2(f_2(7963))\)
Hardy hierarchy 	\(H_{\omega^22}(7962)\) 	\(H_{\omega^22}(7963)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^32+\omega^24}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^32+\omega^24}3+3}}(10)\)
==Sources==
Category: Tier 2 -illion numbers
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Class 3
Category:Illion
Category:Upper class 3