Q: What are the prime factors of the number 15,843,328?

 A: 2, 967

Why are those the prime factors of the number 15,843,328?

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 15,843,328

15,843,328
Factor Arrows
27,921,664
Factor Arrows
23,960,832
Factor Arrows
21,980,416
Factor Arrows
2990,208
Factor Arrows
2495,104
Factor Arrows
2247,552
Factor Arrows
2123,776
Factor Arrows
261,888
Factor Arrows
230,944
Factor Arrows
215,472
Factor Arrows
27,736
Factor Arrows
23,868
Factor Arrows
21,934
Factor Arrows
2967

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, 967

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 2 x 2 x 2 x 2 x 2 x 967 = 15,843,328

This can also be written as 214 x 9671 = 15,843,328

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


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