| Mathematical Power | Name |
|---|
| 1018 or 1,000,000,000,000,000,000 |
one quintillion |
| 1015 or 1,000,000,000,000,000 |
one quadrillion |
| 1012 or 1,000,000,000,000 |
one trillion |
| 109 or 1,000,000,000 |
one billion |
| 106 or 1,000,000 |
one million |
| 103 or 1,000 |
one thousand |
| 102 or 100 |
one hundred |
| 101 or 10 |
ten |
| 100 or 1 |
one |
| 10-1 or 0.1 |
one-tenth |
| 10-2 or 0.01 |
one-hundredth |
| 10-3 or 0.001 |
one-thousandth |
| 10-6 or 0.000 001 |
one-millionth |
| 10-9 or 0.000 000 001 |
one-billionth |
| 10-12 or 0.000 000 000 001 |
one-trillionth |
| 10-15 or 0.000 000 000 000 001 |
one-quadrillionth |
| 10-18 or 0.000 000 000 000 000 001 |
one-quintillionth |