Fugafour

Fugafour is equal to 443 = 464 = 2128 = 227, or \(4 \downarrow \downarrow 4\) using down-arrow notation. The name is formed by applying the fuga- prefix to 4. It is approximately 3.4028*1038 using scientific notation, and it is about 340 undecillion in the short scale or 340 sextillion in the long scale.
It is also the number of possible addresses.
== Decimal expansion ==
340,282,366,920,938,463,463,374,607,431,768,211,456
== Approximations ==
Notation 	Lower bound 	Upper bound
Scientific notation 	\(3.402\times10^{38}\) 	\(3.403\times10^{38}\)
Arrow notation 	\(4\uparrow4\uparrow3\) 	\(4\uparrow4\uparrow3\)
Steinhaus-Moser Notation 	26[3] 	27[3]
Copy notation 	3[39] 	4[39]
Taro's multivariable Ackermann function	A(3,125) 	A(3,126)
Pound-Star Notation 	#*(4,2,3,4,8)*5 	#*(4,5,1,5,1)*6
BEAF 	{4,{4,3}} 	{4,{4,3}}
Hyper-E notation 	E[4]3#2 	E[4]3#2
Bashicu matrix system 	(0)(0)(0)[65536] 	(0)(0)(0)[65536]
Hyperfactorial array notation 	34! 	35!
Strong array notation 	s(4,(4,3)) 	s(4,(4,3))
Fast-growing hierarchy 	\(f_2(121)\) 	\(f_2(122)\)
Hardy hierarchy 	\(H_{\omega^2}(121)\) 	\(H_{\omega^2}(122)\)
Slow-growing hierarchy 	\(g_{\omega^{\omega^3}}(4)\)	\(g_{\omega^{\omega^3}}(4)\)
== See also ==
Category:Numbers
Category:Class 2
Category:Powers of 2
Category:Numbers with 30 to 100 digits