Q: What are the prime factors of the number 325,248?

 A: 2, 3, 7, 11

Why are those the prime factors of the number 325,248?

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 325,248

325,248
Factor Arrows
2162,624
Factor Arrows
281,312
Factor Arrows
240,656
Factor Arrows
220,328
Factor Arrows
210,164
Factor Arrows
25,082
Factor Arrows
22,541
Factor Arrows
3847
Factor Arrows
7121
Factor Arrows
1111

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, 3, 7, 11

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 11 x 11 = 325,248

This can also be written as 27 x 31 x 71 x 112 = 325,248

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


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