Q: What are the prime factors of the number 28,395,312?

 A: 2, 3, 11, 4889

Why are those the prime factors of the number 28,395,312?

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 28,395,312

28,395,312
Factor Arrows
214,197,656
Factor Arrows
27,098,828
Factor Arrows
23,549,414
Factor Arrows
21,774,707
Factor Arrows
3591,569
Factor Arrows
1153,779
Factor Arrows
114,889

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, 11, 4889

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 11 x 4,889 = 28,395,312

This can also be written as 24 x 31 x 112 x 4,8891 = 28,395,312

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


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