Q: What are the prime factors of the number 28,283,328?

 A: 2, 3, 49103

Why are those the prime factors of the number 28,283,328?

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 28,283,328

28,283,328
Factor Arrows
214,141,664
Factor Arrows
27,070,832
Factor Arrows
23,535,416
Factor Arrows
21,767,708
Factor Arrows
2883,854
Factor Arrows
2441,927
Factor Arrows
3147,309
Factor Arrows
349,103

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, 49103

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 3 x 3 x 49,103 = 28,283,328

This can also be written as 26 x 32 x 49,1031 = 28,283,328

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


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