Maximusquadrillion

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Maximusquadrillion is equal to \(10^{10^{15}}\), or 1 followed by 1,000,000,000,000,000 zeroes. The term was coined by Yottatron as a continuation to Maximusmillion, Maximusbillion, and Maximustrillion. It is equal to 1 followed by 1 quadrillion zeros using the short scale definition of quadrillion. It is 10¹⁵+1 digits long.

Writing down the full decimal expansion would take 1,000,000,000 books of 400 pages each, with 2,500 digits on each page (except for the first, which would have 2,501).

Names in -illion systems

In Conway-Wechsler system, maximusquadrillion is expressed in short scale as follows by using Fish's result.

ten (4 times trestrigintatrecentilli)duotrigintatrecentillion

Full expansion is

ten trestrigintatrecentillitrestrigintatrecentillitrestrigintatrecentillitrestrigintatrecentilliduotrigintatrecentillion

According to Landon Curt Noll's The English name of a number, maximusquadrillion is also known as:

ten trecentretriginmilliamilliamilliamilliatrecentretriginmilliamilliamilliatrecentretriginmilliamilliatrecentretriginmilliatrecenduotrigintillion

Approximations

Notation	Lower bound	Upper bound
Scientific notation	\(1\times10^{1\,000\,000\,000\,000\,000}\)
Arrow notation	\(10\uparrow10\uparrow15\)
Down-arrow notation	\(10\downarrow\downarrow16\)
Steinhaus-Moser Notation	12[3][3]	13[3][3]
Copy notation	9[9[15]]	1[10[8]]
Chained arrow notation	\(10→(10→15)\)
H* function	H(333H(3))	H(334H(3))
Taro's multivariable Ackermann function	A(3,A(3,48))	A(3,A(3,49))
Pound-Star Notation	#*((1))*(38)*4	#*((1))*(39)*4
BEAF	{10,{10,15}}
Bird's array notation	{10,{10,15}}
Hyper-E notation	E15#2
Bashicu matrix system	(0)(1)[6]	(0)(1)[7]
Hyperfactorial array notation	(16!)!	(17!)!
Fast-growing hierarchy	\(f_2(f_2(46))\)	\(f_2(f_2(47))\)
Hardy hierarchy	\(H_{\omega^22}(46)\)	\(H_{\omega^22}(47)\)
Slow-growing hierarchy	\(g_{\omega^{\omega^{\omega+5}}}(10)\)

See also

• Maximusbillion
• Maximustrillion