| K | kilo- | thousand | | 10^3 | 1,000 |
| M | mega- | million | one thousand thousand | 10^6 | 1,000,000 |
| G | giga- | billion | one thousand million | 10^9 | 1,000,000,000 |
| T | tera- | trillion | one million million | 10^12 | 1,000,000,000,000 |
| P | peta- | quadrillion | one million billion | 10^15 | 1,000,000,000,000,000
|
| E | exa- | quintillion | one billion billion | 10^18 | 1,000,000,000,000,000,000
|
| Z | zetta- | sextillion | one billion trillion | 10^21 | 1,000,000,000,000,000,000,000
|
| Y | yotta- | septillion | one trillion trillion | 10^24 | 1,000,000,000,000,000,000,000,000
|
Except that computer people use 2 as a base raised to multiples of powers of 10, instead of 10 raised to multiples of powers of 3 because powers of 2 are handier for them, but they also want to stay somewhat close to the values of 10 most folks are used to.
| 1,024 | K | kilo- (kibi-) | 2^10 |
| 1,048,576 | M | mega- (mebi-) | 2^20 |
| 1,073,741,824 | G | giga- (gibi-) | 2^30 |
| 1,099,511,627,776 | T | tera- (tebi-) | 2^40 |
| 1,125,899,906,842,624 | P | peta- (pebi-) | 2^50 |
| 1,152,921,504,606,846,976 | E | exa- (exbi-) | 2^60 |
| 1,180,591,620,717,411,303,424 | Z | zetta- (zebi-) | 2^70 |
| 1,208,925,819,614,629,174,706,176 | Y | yotta- (yobi-) | 2^80 |
