7969

7969 is a natural number that comes after 7968 and before 7970. It is an odd composite number and is not a prime power.

In number-theory terms, 7969 factors as 13 × 613, with 13 and 613 both prime. This makes 7969 a semiprime (the product of two primes) and, since the two prime factors are distinct, it is square-free.

Numerical representations and basic properties:

- Decimal: 7969

- Binary: 1111100100001

- Octal: 17441

- Hexadecimal: 0x1F21

- Sum of digits: 7 + 9 + 6 + 9 = 31; the digital root is 4

- Not divisible by 2, 3, or 5; divisible exactly by 13 and 613

Context and notes:

As a semiprime, 7969 is sometimes referenced in elementary number theory as a simple example of a composite number with exactly two prime factors. Its factorization is useful for illustrating basic concepts in factoring and the study of semiprimes, which have applications in cryptography and primality testing as test cases for algorithms.

See also:

- Semiprime

- Prime factorization

- Number representations (binary, octal, hexadecimal)