This number is the sum of the first nine prime numbers, as well as the sum of two prime numbers (47 + 53). But perhaps this number is most important as the basis of percentages (literally "per hundred"), with 100% being a full amount.

**One hundred** is also:

- The atomic number of fermium, an actinide.
- The number of years in a century.
- The number of pounds in an American short hundredweight
- The denomination of the U.S. dollar with Benjamin Franklin's portrait.
- The denomination of American savings bonds with Thomas Jefferson's portrait.
- The denomination of American treasury bonds with Andrew Jackson's portrait.

See also: ninety, one hundred, one hundred and ten

This article is about the number. For the year AD 100, see 100.