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503 is a prime number from 501-600. 503 has 2 factors, 1 and 503. It is the 96th prime number, and the first prime number from 501-600.

Proofs

  • Yes — 503 can be divided by 1.
  • No — 503 cannot be divided by 2-502.
  • Yes — 503 can be divided by 503.

Relationship with other odd numbers

The numbers before

  • The previous prime number is 499.
    • 499 and 503 are four numbers apart; therefore, they are cousin primes.
  • The previous prime number before 499 is 491.
    • In particular, 493 is the product of 17 and 29, while 497 is divisible by 7.

The numbers after

  • The next prime number is 509.
    • 503 and 509 are six numbers apart; therefore, they are sexy primes.
  • 521 is the next prime number after 509.
    • 511 is divisible by 7, while 517 is divisible by 11. Both numbers are composite.

Trivia

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