Is 493 a prime number?

Prime Number Checker
Number

Is 493 a prime or composite number?

Answer

Number 493 is not a Prime

493 = 17 × 29

493 has 4 divisors — 1, 17, 29 and 493; a prime has exactly two: 1 and itself.

Primes up to √493

22² = 484 ≤ 493 < 529 = 23², so it is enough to try primes up to 22

  • ÷2 does not divide
  • ÷3 does not divide
  • ÷5 does not divide
  • ÷7 does not divide
  • ÷11 does not divide
  • ÷13 does not divide
  • ÷17 divides

493 ÷ 17 = 29 — 17 divides 493, so 493 is composite

Nearest primes: 491 and 499

Related Calculations

See Also

Prime numbers list

NumberIs Prime
467Yes
469No: 7 × 67
471No: 3 × 157
473No: 11 × 43
474No: 2 × 3 × 79
475No: 5² × 19
477No: 3² × 53
478No: 2 × 239
481No: 13 × 37
482No: 2 × 241
487Yes
488No: 2³ × 61
489No: 3 × 163
491Yes
492No: 2² × 3 × 41
493No: 17 × 29
495No: 3² × 5 × 11
499Yes
500No: 2² × 5³
501No: 3 × 167
503Yes
504No: 2³ × 3² × 7
505No: 5 × 101
507No: 3 × 13²
508No: 2² × 127
509Yes
511No: 7 × 73
512No: 2⁹
513No: 3³ × 19
514No: 2 × 257

FAQ

Is 493 a prime or composite number?

Number 493 is not a Prime

How many factors are in a number 493?

4

How to check if 493 is prime?

Divide 493 by the primes in order: 22² = 484 ≤ 493 < 529 = 23², so it is enough to try primes up to 22. The first one that divides it is 17: 493 ÷ 17 = 29, so 493 is composite.

See Also