Q: What are the prime factors of the number 317,590?

 A: 2, 5, 7, 13, 349

Why are those the prime factors of the number 317,590?

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 317,590

317,590
Factor Arrows
2158,795
Factor Arrows
531,759
Factor Arrows
74,537
Factor Arrows
13349

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:

2, 5, 7, 13, 349

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 13 x 349 = 317,590

This can also be written as 21 x 51 x 71 x 131 x 3491 = 317,590

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


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