Q: What are the prime factors of the number 493,605?

 A: 3, 5, 7, 1567

Why are those the prime factors of the number 493,605?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 493,605

493,605
Factor Arrows
3164,535
Factor Arrows
354,845
Factor Arrows
510,969
Factor Arrows
71,567

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 5, 7, 1567

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 1,567 = 493,605

This can also be written as 32 x 51 x 71 x 1,5671 = 493,605

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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