803

803 = 11 x 73.

803 is the sum of three consecutive prime numbers: 803 = 263 + 269 + 271. It is also the sum of nine consecutive primes: 803 = 71 + 73 + 79 + 83 + 89 + 97 + 101 + 103 + 107.

803 is 30203 in base 4, 323 in base 16, and 203 in base 20.

803 is a divisor of 99999999.

Telephone area code 803 covers southern South Carolina.

Source: On-Line Encyclopedia of Integer Sequences