Tetracontillion

Tetracontillion is equal to \(10^{3\left(10^{120}\right)+3}\), or \(10^{3\textrm{ noventrigintillion }3}\)Illion Numbers by Jonathan Bowers using the short scale definition of noventrigintillion. The term was coined by Jonathan Bowers. It is the smallest Bowers' -illion that is larger than googolplex, or the first ever -illion to ever be larger than a Googolplex.
SuperJedi224 coined pepto-yoctillion for this number, and is equal to H(10120) using H* function.-Illions - Almost Infinite (retrieved 2021-05-02 01:14 UTC)
Tetracontillion is also known as one millia^40tillion according to Landon Curt Noll.Landon Curt Noll, The English name of a number.
== Etymology ==
The name of this number is based on the suffix "-illion" and the prefix "tetraconta-" (from Greek 40).
==Approximations==
Notation 	Lower bound 	Upper bound
Arrow notation 	\(1000\uparrow(1+10\uparrow120)\) 	\(1000\uparrow(1+10\uparrow120)\)
Down-arrow notation 	\(1000\downarrow\downarrow41\) 	\(535\downarrow\downarrow45\)
Steinhaus-Moser Notation 	65[3][3] 	66[3][3]
Copy notation 	2[2[121]] 	3[3[121]]
H* function 	H(H(39)) 	H(H(39))
Taro's multivariable Ackermann function	A(3,A(3,398)) 	A(3,A(3,399))
Pound-Star Notation 	#*((1))*(4,0,4,6,1,1)*7 	#*((1))*(9,7,0,3,2,6)*6
BEAF 	{1000,1+{10,120}} 	{1000,1+{10,120}}
Hyper-E notation 	E(3+3E120) 	E(3+3E120)
Bashicu matrix system 	(0)(1)[19] 	(0)(1)[20]
Hyperfactorial array notation 	(79!)! 	(80!)!
Fast-growing hierarchy 	\(f_2(f_2(393))\) 	\(f_2(f_2(394))\)
Hardy hierarchy 	\(H_{\omega^22}(393)\) 	\(H_{\omega^22}(394)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^{\omega^2+\omega2}3+3}}(10)\)	\(g_{\omega^{\omega^{\omega^2+\omega2}3+3}}(10)\)
== Sources ==
== See also ==
Category:Numbers
Category:Numbers by Jonathan Bowers
Category:Illion
Category:Class 3
Category:Greek-based name
Category:Upper class 3
Category:Tier 2 -illion numbers