803

803 is a natural number that comes after 802 and before 804. It is used in mathematical, geographical, and historical contexts, and appears in various numeral representations.

In mathematics, 803 is a semiprime, being the product of the two prime numbers 11 and 73. It is an odd composite number with divisors 1, 11, 73, and 803. The sum of its base-10 digits is 11.

In numeral systems, 803 is represented as 803 in decimal, 1100100011 in binary, 0x323 in hexadecimal, and 0o1443 in octal. In Roman numerals, it is written as DCCCIII.

In geography and telecommunications, 803 is the area code assigned to central South Carolina in the North American Numbering Plan, covering areas that include the state capital, Columbia.

In history, the year 803 CE falls in the early Middle Ages, a period marked by various political, military, and cultural developments across Europe, the Mediterranean, and surrounding regions.