[Appropriate uses of units electronvolt (eV), light-year (ly) and astronomical unit (AU)].
The following table shows prefixes used with SI units.
| Name | Prefix | Number |
|---|---|---|
| femto | $f$ | $\times 10^{-15}$ |
| pico | $p$ | $\times 10^{-12}$ |
| nano | $n$ | $\times 10^{-9}$ |
| micro | $\mu$ | $\times 10^{-6}$ |
| milli | $m$ | $\times 10^{-3}$ |
| kilo | $k$ | $\times 10^3$ |
| mega | $M$ | $\times 10^6$ |
| giga | $G$ | $\times 10^9$ |
| tera | $T$ | $\times 10^{12}$ |
| peta | $P$ | $\times 10^{15}$ |