323. (Binary: 1010000112, Octal: 5038, Hexadecimal: 14316.) - External links: Wikipedia
- 323 is product of two consecutive prime numbers 17 and 19.
- 323 is the sum of nine consecutive primes (19 + 23 + 29 + 31 + 37 + 41 + 43 + 47 + 53) and the sum of the 13 consecutive primes (5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47).
- 323 = 18 x 18 - 1.
- First occurance of 323 in decimal approximation of Pi is from 17. to 19. characters which happens to be its prime factors. (As a string including the dot 3.14159265358979323).