10999

10999 is a positive integer in the base-10 numeral system. It is odd and composite. Its prime factorization is 17 × 647, making 10999 a semiprime (the product of two primes). As a result, it has exactly four positive divisors: 1, 17, 647, and 10999.

The divisors yield a sum-of-divisors value of 11664. In common base representations, 10999 is 0x2AF7 in hexadecimal, 25367 in octal, and 10101011110111 in binary. It is also equal to 11000 − 1 in decimal, placing it just below a round decimal boundary.

Because 10999 is a semiprime with relatively modest prime factors, it is not suitable for cryptographic use. It is primarily of interest in elementary number theory and arithmetic demonstrations, illustrating concepts such as factorization, divisors, and base conversions. Its decimal form ends with 999, a pattern that occasionally appears in numerical examples and puzzles.

In summary, 10999 is a four-divisor composite number with prime factors 17 and 647, representable in multiple bases as 0x2AF7 (hex), 25367 (octal), and 10101011110111 (binary). It is the value 11000 minus 1 and does not carry widely recognized mathematical constants or historical significance beyond its role as an instructional example.