Names of small numbers
Table of names
The following table lists English language names of small numbers used in the long and short scales, along with the power of 10, engineering notation, and International System of Units (SI) symbols and prefixes.[2][3][4][5][6][7][8]
| Power of ten |
Engineering notation |
Short scale (U.S. and modern British) |
Long scale (continental Europe, archaic British, and India) |
SI prefix |
SI symbol |
|---|---|---|---|---|---|
| 100 | 1 | One | One | ||
| 10−1 | 100×10−3 | One Tenth | One Tenth | deci- | d |
| 10−2 | 10×10−3 | One One-Hundredth | One One-Hundredth | centi- | c |
| 10−3 | 1×10−3 | One One-Thousandth | One One-Thousandth | milli- | m |
| 10−6 | 1×10−6 | One One-Millionth | One One-Millionth | micro- | µ |
| 10−9 | 1×10−9 | One One-Billionth | One One-Milliardth | nano- | n |
| 10−12 | 1×10−12 | One One-Trillionth | One One-Billionth | pico- | p |
| 10−15 | 1×10−15 | One One-Quadrillionth | One One-Billiardth | femto- | f |
| 10−18 | 1×10−18 | One One-Quintillionth | One One-Trillionth | atto- | a |
| 10−21 | 1×10−21 | One One-Sextillionth | One One-Trilliardth | zepto- | z |
| 10−24 | 1×10−24 | One One-Septillionth | One One-Quadrillionth | yocto- | y |
| 10−27 | 1×10−27 | One One-Octillionth | One One-Quardilliardth | ronto- | r |
| 10−30 | 1×10−30 | One One-Nonillionth | One One-Quintillionth | quecto- | q |
| 10−33 | 1×10−33 | One One-Decillionth | One One-Quintilliardth | ||
| 10−36 | 1×10−36 | One One-Undecillionth | One One-Sextillionth | ||
| 0 | 1×10−∞ | 0 | 0 | ||
| –1 | |||||
| −∞ | undefined | Negative Infinity | Negative Infinity |
References
- "Binary Numbers - Floating Point". Turing.cs.camosun.bc.ca. 1997-02-24. Archived from the original on 2012-03-21. Retrieved 2014-07-07.
- American Heritage Dictionary, 4th edition, ISBN 0-395-82517-2. "The American Heritage Dictionary of the English Language, Fourth Edition. 2000". Archived from the original on 2007-01-12. Retrieved 2004-05-29.
- Oxford English Dictionary, New Edition, Oxford, UK: Oxford University Press. (subscription required)
- Bureau International des Poids et Mesures (BIPM)
- US NIST Definitions of the SI units: The twenty SI prefixes
- "Large and Small Numbers - Metric Prefixes". 2012-08-26. Archived from the original on 2013-07-24. Retrieved 2014-07-07.
- "ThinkQuest". Library.thinkquest.org. 2013-07-01. Archived from the original on 2012-11-11. Retrieved 2014-07-07.
- Manske, Magnus (2011-05-02). "Names of large and small numbers". Archived from the original on 2011-09-03. Retrieved 2014-07-07.
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