Heptecillion

The heptecillion is equal to \(10^{3\left(10^{51}\right)+3}\) or \(10^{3\text{ sexdecillion }3}\).Illion Numbers by Jonathan Bowers The term was coined by Jonathan Bowers. It is 3×1051+4 digits long.
Heptecillion is also known as one millia^17tillion according to Landon Curt Noll's The English name of a number.
== Etymology ==
The name of this number is based on the suffix "-illion" and the prefix "hepteco-".
== Approximations in other notations ==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow51)\) 	\(1000\uparrow(1+10\uparrow51)\)
Down-arrow notation 	\(1000\downarrow\downarrow18\) 	\(7\downarrow\downarrow62\)
Steinhaus-Moser Notation 	32[3][3] 	33[3][3]
Copy notation 	2[2[52]] 	3[3[52]]
H* function 	H(H(16)) 	H(H(16))
Taro's multivariable Ackermann function	A(3,A(3,169)) 	A(3,A(3,170))
Pound-Star Notation 	#*((1))*(1,4,3,4)*5 	#*((1))*(2,4,3,4)*5
BEAF 	{1000,1+{10,51}} 	{1000,1+{10,51}}
Hyper-E notation 	E(3+3E51) 	E(3+3E51)
Bashicu matrix system 	(0)(1)[12] 	(0)(1)[13]
Hyperfactorial array notation 	(41!)! 	(42!)!
Fast-growing hierarchy 	\(f_2(f_2(165))\) 	\(f_2(f_2(166))\)
Hardy hierarchy 	\(H_{\omega^22}(165)\) 	\(H_{\omega^22}(166)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega5+1}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega5+1}3+3}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 3
Category:Middle class 3
Category:Tier 2 -illion numbers