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This article lists and discusses the usage and derivation of names of small numbers.[1]
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
10−30 1×10−30 One One-Nonillionth One One-Quintillionth
0 undefined Zero Zero
−∞ undefined Negative Infinity Negative Infinity

See also

iconMathematics portal

Names of large numbers
Orders of magnitude (numbers)
List of numbers § Small numbers
List of arbitrary-precision arithmetic software
Infinitesimal

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. "Archived copy". Archived from the original on 2007-01-12. Retrieved 2004-05-29.
Oxford English Dictionary, New Edition, Oxford, UK: Oxford University Press. [1] (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.

Orders of magnitude
Quantity

Acceleration Angular momentum Area Bit rate Charge Computing Currency Current Data Density Energy / Energy density Entropy Force Frequency Illuminance Length Luminance Magnetic field Mass Molarity Numbers Power Pressure Probability Radiation Sound pressure Specific heat capacity Speed Temperature Time Voltage

See also

Back-of-the-envelope calculation Fermi problem Powers of 10 and decades
10th 100th 1000000th Billionth Trillionth Metric (SI) prefix Macroscopic scale Microscopic scale Quantum realm

Related

Astronomical system of units Earth's location in the Universe Cosmic View (1957 book) To the Moon and Beyond (1964 film) Cosmic Zoom (1968 film) Powers of Ten (1968 and 1977 films) Cosmic Voyage (1996 documentary) Cosmic Eye (2012)

Mathematics Encyclopedia

Hellenica World - Scientific Library

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