Q: What are the prime factors of the number 325,121,120?

 A: 2, 5, 151, 13457

Why are those the prime factors of the number 325,121,120?

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 325,121,120

325,121,120
Factor Arrows
2162,560,560
Factor Arrows
281,280,280
Factor Arrows
240,640,140
Factor Arrows
220,320,070
Factor Arrows
210,160,035
Factor Arrows
52,032,007
Factor Arrows
15113,457

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, 151, 13457

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 151 x 13,457 = 325,121,120

This can also be written as 25 x 51 x 1511 x 13,4571 = 325,121,120

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


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