Heptehectillion

Heptehectillion is equal to \(10^{3\cdot10^{321} + 3}\).Jonathan Bowers' 4 Tiered -illion Series It is defined using Sbiis Saibian's generalization of Jonathan Bowers' -illion system.
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow321)\) 	\(1000\uparrow(1+10\uparrow321)\)
Down-arrow notation 	\(1000\downarrow\downarrow108\) 	\(143\downarrow\downarrow150\)
Steinhaus-Moser Notation 	147[3][3] 	148[3][3]
Copy notation 	2[2[322]] 	3[3[322]]
H* function 	H(H(106)) 	H(H(106))
Taro's multivariable Ackermann function	A(3,A(3,1066)) 	A(3,A(3,1067))
Pound-Star Notation 	#*((1))*((3))*9 	#*((1))*((4))*9
BEAF 	{1000,1+{10,321}} 	{1000,1+{10,321}}
Hyper-E notation 	E(3+3E321) 	E(3+3E321)
Bashicu matrix system 	(0)(1)[32] 	(0)(1)[33]
Hyperfactorial array notation 	(175!)! 	(176!)!
Fast-growing hierarchy 	\(f_2(f_2(1059))\) 	\(f_2(f_2(1060))\)
Hardy hierarchy 	\(H_{\omega^22}(1059)\) 	\(H_{\omega^22}(1060)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^23+\omega2+1}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^23+\omega2+1}3+3}}(10)\)
== Sources ==
Category:Numbers
Category:Illion
Category:Class 3
Category:Greek-based name
Category:Upper class 3
Category:Tier 2 -illion numbers