Number 503 is a prime number.

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. Therefore we consider 503 as a prime number, because:

- 503 is a natural number greater than 1,
- 503 is not a product of 2 smaller natural numbers (it can be divided only by 1 and itself)

Number of factors: 2.

List of factors/divisors: 1, 503.

Parity: 503 is an odd number.

Perfect square: no (a square number or perfect square is an integer that is the square of an integer).

Perfect number: no, because the sum of its proper divisors is 1 (perfect number is a positive integer that is equal to the sum of its proper divisors).

Number: Prime number: | 496 no | 497 no | 498 no | 499 yes | 500 no | 501 no | 502 no | 503 yes | 504 no | 505 no | 506 no | 507 no | 508 no | 509 yes | 510 no |
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