Tetrahectillion

Tetrahectillion is equal to \(10^{3\times 10^{1,200}+3}\).Sbiis Saibian's large numbers sitePointless Gigantic List of Numbers - Part 2 (1,000,000 ~ 10^10^1,000,000)
 The term was coined by Sbiis Saibian.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow1200)\) 	\(1000\uparrow(1+10\uparrow1200)\)
Down-arrow notation 	\(1000\downarrow\downarrow401\) 	\(845\downarrow\downarrow411\)
Steinhaus-Moser Notation 	451[3][3] 	452[3][3]
Copy notation 	2[2[1201]] 	3[3[1201]]
H* function 	H(H(399)) 	H(H(399))
Taro's multivariable Ackermann function	A(3,A(3,3986)) 	A(3,A(3,3987))
Pound-Star Notation 	#*((1))*((104))*15 	#*((1))*((105))*15
BEAF 	{1000,1+{10,1200}} 	{1000,1+{10,1200}}
Hyper-E notation 	E(3+3E1200) 	E(3+3E1200)
Bashicu matrix system 	(0)(1)[63] 	(0)(1)[64]
Hyperfactorial array notation 	(523!)! 	(524!)!
Fast-growing hierarchy 	\(f_2(f_2(3977))\) 	\(f_2(f_2(3978))\)
Hardy hierarchy 	\(H_{\omega^22}(3977)\) 	\(H_{\omega^22}(3978)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^3+\omega^22}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^3+\omega^22}3+3}}(10)\)
==Sources==
Category: Tier 2 -illion numbers
Category:Numbers
Category:Numbers by Sbiis Saibian
Category:Class 3
Category:Illion
Category:Upper class 3