Q: What are the prime factors of the number 317,600?

 A: 2, 5, 397

Why are those the prime factors of the number 317,600?

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 317,600

317,600
Factor Arrows
2158,800
Factor Arrows
279,400
Factor Arrows
239,700
Factor Arrows
219,850
Factor Arrows
29,925
Factor Arrows
51,985
Factor Arrows
5397

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, 397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 397 = 317,600

This can also be written as 25 x 52 x 3971 = 317,600

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


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