The centyllion is equal to \(10^{2^{102}} = 10^{5,070,602,400,912,917,605,986,812,821,504}\) in the myriad system, or 10 squared 102 times.[1][2] It is equal to one followed by 2102 (or approx. 5 nonillion) zeros. It is 2102+1 digits long.

In the Knuth-Pelletier -yllion system, centyllion is equal to 103,213,876,088,517,980,551,083,924,184,682,325,205,044,405,987,565,585,670,602,752 which is equal to novemnonaginticentyllion in the normal -yllion system.

Names in -illion systems

In the short scale, it is also called:

one hundred millinonagintasescentilliducentillioctingentilliquattuortrecentilliquinquatrecentillioctosexagintaoctingentilliduosexagintasescentilliseptuagintaducentilliquadragintanongentilliquingentillion

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

ten milliamilliamilliamilliamilliamilliamilliamilliamilliamilliasescennonaginmilliamilliamilliamilliamilliamilliamilliamilliamilliaduocenmilliamilliamilliamilliamilliamilliamilliamilliaoctingenmilliamilliamilliamilliamilliamilliamilliatrecenquattuormilliamilliamilliamilliamilliamilliatrecenquinmilliamilliamilliamilliamilliaoctingenoctosexaginmilliamilliamilliamilliasescenduosexaginmilliamilliamilliaduocenseptuaginmilliamillianongenquadraginmilliaquingentillion

Approximations in other notations

Notation Lower bound Upper bound
Scientific notation \(10^{5.070602 \times 10^{30}}\)
Arrow notation \(10\uparrow2\uparrow102\)
Down-arrow notation \(564\downarrow\downarrow12\) \(565\downarrow\downarrow12\)
Steinhaus-Moser Notation 21[3][3] 22[3][3]
Copy notation 4[4[31]] 5[5[31]]
H* function H(H(9)) H(2H(9))
Taro's multivariable Ackermann function A(3,A(3,100)) A(3,A(3,101))
Pound-Star Notation #*((1))*(2,0,10)*4 #*((1))*(5,2)*9
BEAF {10,{2,102}}
Hyper-E notation EE[2]102
Bashicu matrix system (0)(1)[10]
Hyperfactorial array notation (27!)! (28!)!
Fast-growing hierarchy \(f_2(f_2(96))\) \(f_2(f_2(97))\)
Hardy hierarchy \(H_{\omega^22}(96)\) \(H_{\omega^22}(97)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{\omega3}5}}(10)\) \(g_{\omega^{\omega^{\omega3}6}}(10)\)

See also

Sources

myllion byllion tryllion quadryllion quintyllion
sextyllion septyllion octyllion nonyllion decyllion
undecyllion duodecyllion tredecyllion quattuordecyllion quindecyllion
sexdecyllion septdecyllion octodecyllion novemdecyllion vigintyllion
unvigintyllion duovigintyllion trevigintyllion quattuorvigintyllion quinvigintyllion
sexvigintyllion septemvigintyllion octovigintyllion novemvigintyllion trigintyllion
untrigintyllion duotrigintyllion tretrigintyllion quattuortrigintyllion quintrigintyllion
sextrigintyllion septtrigintyllion octotrigintyllion novemtrigintyllion quadragintyllion
quinquagintyllion sexagintyllion septuagintyllion octogintyllion nonagintyllion
centyllion ducentyllion trecentyllion quadringentyllion quingentyllion
sescentyllion septingentyllion octingentyllion nongentyllion millyllion
myryllion micryllion nanyllion picyllion femtyllion
attyllion zeptyllion yoctyllion googolyllion latinlatinlatinbyllionyllionyllionyllion
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