6503

6503 is a natural number that lies between 6502 and 6504. In mathematics, it is notable as a semiprime, meaning it is the product of exactly two prime numbers: 6503 = 7 × 929, where 7 and 929 are prime.

As a product of two distinct primes, 6503 has four positive divisors: 1, 7, 929, and 6503. The number is odd and not divisible by 3 or 5 (the digit sum is 14), and its Euler totient is φ(6503) = (7 − 1)(929 − 1) = 6 × 928 = 5568. In base representations, 6503 equals 0x1967 in hexadecimal and 1100101100111 in binary.

The property of being a semiprime places 6503 within a class of numbers studied in number theory for illustrating the factorization of composites into two primes. Semiprimes are also discussed in the context of cryptography, although 6503 itself is far too small for practical use in any cryptographic system.

In summary, 6503 is a small semiprime with simple factorization, a short divisor list, and standard representations in hexadecimal and binary. See also semiprime and prime factorization for related topics.