Q: What are the prime factors of the number 325,120?

 A: 2, 5, 127

Why are those the prime factors of the number 325,120?

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 325,120

325,120
Factor Arrows
2162,560
Factor Arrows
281,280
Factor Arrows
240,640
Factor Arrows
220,320
Factor Arrows
210,160
Factor Arrows
25,080
Factor Arrows
22,540
Factor Arrows
21,270
Factor Arrows
2635
Factor Arrows
5127

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, 127

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 2 x 2 x 5 x 127 = 325,120

This can also be written as 29 x 51 x 1271 = 325,120

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


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