Positive powers[edit]
In decimal notation the nth power of ten is written as '1' followed by n zeroes. It can also be written as 10n or as 1En in E notation. See order of magnitude and orders of magnitude (numbers) for named powers of ten. There are two conventions for naming positive powers of ten, called the long and short scales. Where a power of ten has different names in the two conventions, the long scale name is shown in brackets.
The positive 10 power related to a short scale name can be determined based on its Latin name-prefix using the following formula: 10 [(prefix-number + 1) × 3]
Examples: billion = 10 [(2 + 1) × 3] = 10 9 ; octillion = 10 [(8 + 1) × 3] = 10 27
Name | Power | Number | SI symbol | SI prefix |
---|---|---|---|---|
One | 0 | 1 | (none) | (none) |
Ten | 1 | 10 | da(D) | deca |
Hundred | 2 | 100 | h(H) | hecto |
Thousand | 3 | 1,000 | k(K) | kilo |
Ten Thousand (Myriad) | 4 | 10,000 | ||
Hundred Thousand | 5 | 100,000 | ||
Million | 6 | 1,000,000 | M | mega |
Billion (Milliard) | 9 | 1,000,000,000 | G | giga |
Trillion (Billion) | 12 | 1,000,000,000,000 | T | tera |
Quadrillion (Billiard) | 15 | 1,000,000,000,000,000 | P | peta |
Quintillion (Trillion) | 18 | 1,000,000,000,000,000,000 | E | exa |
Sextillion (Trilliard) | 21 | 1,000,000,000,000,000,000,000 | Z | zetta |
Septillion (Quadrillion) | 24 | 1,000,000,000,000,000,000,000,000 | Y | yotta |
Octillion (Quadrilliard) | 27 | 1,000,000,000,000,000,000,000,000,000 | ||
Nonillion (Quintillion) | 30 | 1,000,000,000,000,000,000,000,000,000,000 | ||
Decillion (Quintilliard) | 33 | 1,000,000,000,000,000,000,000,000,000,000,000 | ||
Undecillion (Sextillion) | 36 | 1,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Duodecillion (Sextilliard) | 39 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Tredecillion (Septillion) | 42 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Quattuordecillion (Septilliard) | 45 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Quindecillion (Octillion) | 48 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Sexdecillion (Octilliard) | 51 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Septendecillion (Nonillion) | 54 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Octodecillion (Nonilliard) | 57 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Novemdecillion (Decillion) | 60 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
Vigintillion (Decilliard) | 63 | 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | ||
... | ... | ... | ... | ... |
Googol | 100 | 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000, 000,000,000,000,000,000,000,000,000,000 | ||
... | ... | ... |
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