## FANDOM

10,407 Pages

For Tiaokhiao's decillion, see nonillion.

A decillion is equal to 1033 in short scale, or 1060 in long scale.[1] It is 34 digits long in short scale, and 61 digits long in long scale.

In the long scale, 1033 is called quintilliard, which is commonly used in France and Germany.

This number is also called hendekillion in Russ Rowlett's Greek-based naming system.[2]

Aarex Tiaokhiao gave the name mecillion, referring to the value of this number.[3]

## Decimal

• 1,000,000,000,000,000,000,000,000,000,000,000 - short scale
• 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 - long scale

## Examples

• The mass of the sun is about 1.989 decillion grams.
• The Area of the Milky Way galaxy is approximately 702 decillion square kilometers.[4]
• The prefix tenakilo- multiplies by one decillion.

## Approximations

For short scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{33}$$
Arrow notation $$10\uparrow33$$
Steinhaus-Moser Notation 23[3] 24[3]
Copy notation 9[33] 10[17]
Taro's multivariable Ackermann function A(3,106) A(3,107)
Pound-Star Notation #*(4,6,4,0,2)*5 #*(1,0,1,3)*7
BEAF {10,33}
Hyper-E notation E33
Bashicu matrix system (0)(0)(0)[13335] (0)(0)(0)[13336]
Hyperfactorial array notation 30! 31!
Fast-growing hierarchy $$f_2(102)$$ $$f_2(103)$$
Hardy hierarchy $$H_{\omega^2}(102)$$ $$H_{\omega^2}(103)$$
Slow-growing hierarchy $$g_{\omega^{\omega3+3}}(10)$$

For long scale:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{60}$$
Arrow notation $$10\uparrow60$$
Steinhaus-Moser Notation 37[3] 38[3]
Copy notation 9[60] 1[61]
Taro's multivariable Ackermann function A(3,196) A(3,197)
Pound-Star Notation #*(9,5,0,3,3,7)*6 #*(0,6,0,3,3,7)*6
BEAF {10,60}
Hyper-E notation E60
Bashicu matrix system (0)(0)(0)(0)[5623] (0)(0)(0)(0)[5624]
Hyperfactorial array notation 47! 48!
Fast-growing hierarchy $$f_2(191)$$ $$f_2(192)$$
Hardy hierarchy $$H_{\omega^2}(191)$$ $$H_{\omega^2}(192)$$
Slow-growing hierarchy $$g_{\omega^{\omega6}}(10)$$

## List of prefixed numbers derived from decillion

Name Short scale Long scale
undecillion 1036 1066
duodecillion 1039 1072
tredecillion 1042 1078
quattuordecillion 1045 1084
quindecillion 1048 1090
sexdecillion 1051 1096
septendecillion 1054 10102
octodecillion 1057 10108
novemdecillion 1060 10114

## Sources

Main article: -illion
1–9: million · billion · trillion · quadr · quint · sext · sept · oct · non
10–19: decillion · undec · duodec · tredec · quattuordec · quindec · sexdec · septendec · octodec · novemdec
20–29: vigintillion · unvigint · duovigint · trevigint · quattuorvigint · quinvigint · sexvigint · septenvigint · octovigint · novemvigint
30–39: trigintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
40–49: quadragintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
50–59: quinquagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
60–69: sexagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
70–79: septuagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
80–89: octogintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
90–99: nonagintillion (un- · duo- · tre- · quattuor- · quin- · sex- · septen- · octo- · novem-)
100–900: centillion · unviginticent · ducent · trecent · duotrigintatrecent · quadringent · quingent · sescent · septuagintisescent · septingent · octingent · nongent
1,000–1024: millillion · dumill · trimill · quadrimill · quinmill · sexmill · septimill · octimill · nonimill · myr · centimill · micr · nan · pic · femt · att · zept · yoct