Q: What are the prime factors of the number 15,153,312?

 A: 2, 3, 29, 5443

Why are those the prime factors of the number 15,153,312?

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 15,153,312

15,153,312
Factor Arrows
27,576,656
Factor Arrows
23,788,328
Factor Arrows
21,894,164
Factor Arrows
2947,082
Factor Arrows
2473,541
Factor Arrows
3157,847
Factor Arrows
295,443

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, 29, 5443

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 29 x 5,443 = 15,153,312

This can also be written as 25 x 31 x 291 x 5,4431 = 15,153,312

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


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