Hundred

One hundred (100) is a natural number. In scientific notation, it is written as 10². The standard SI prefix for a hundred is "hecto-". The Roman numeral for hundred is C (for centum).This number is important as the basis of percentages (literally "per hundred"), with 100% being a full amount. It is used in many physical units.

See also: Hundred (division), century, the year AD 100