Names of small numbers
From Wikipedia, the free encyclopedia
This article lists and discusses the usage and derivation of names of small numbers.[1]
[edit] 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 ten, 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 symbol |
SI prefix |
|---|---|---|---|---|---|
| 100 | 1 | One | One | ||
| 10−1 | 100×10−3 | Tenth | Tenth | d | deci- |
| 10−2 | 10×10−3 | Hundredth | Hundredth | c | centi- |
| 10−3 | 1×10−3 | Thousandth | Thousandth | m | milli- |
| 10−4 | 100×10−6 | Ten thousandth | Ten thousandth | ||
| 10−5 | 10×10−6 | Hundred thousandth | Hundred thousandth | ||
| 10−6 | 1×10−6 | Millionth | Millionth | µ | micro- |
| 10−9 | 1×10−9 | Billionth | — | n | nano- |
| 10−12 | 1×10−12 | Trillionth | Billionth | p | pico- |
| 10−15 | 1×10−15 | Quadrillionth | — | f | femto- |
| 10−18 | 1×10−18 | Quintillionth | Trillionth | a | atto- |
| 10−21 | 1×10−21 | Sextillionth | — | z | zepto- |
| 10−24 | 1×10−24 | Septillionth | Quadrillionth | y | yocto- |
| 10−27 | 1×10−27 | Octillionth | — | ||
| 10−30 | 1×10−30 | Nonillionth | Quintillionth |
[edit] See also
[edit] References
- ^ http://turing.cs.camosun.bc.ca/COMP166/resources/floatingpoint.html
- ^ American Heritage Dictionary, 4th edition, ISBN 0-395-82517-2. [1]
- ^ Oxford English Dictionary, New Edition, Oxford, UK: Oxford University Press. [2] (subscription required)
- ^ Bureau International des Poids et Mesures (BIPM)
- ^ US NIST Definitions of the SI units: The twenty SI prefixes
- ^ http://www.essex1.com/people/speer/large.html
- ^ http://library.thinkquest.org/5427/numbers.html
- ^ http://www.uni-bonn.de/~manfear/numbers_names.php
