Q: What are the prime factors of the number 28,935,765?

 A: 3, 5, 19, 29, 389

Why are those the prime factors of the number 28,935,765?

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 28,935,765

28,935,765
Factor Arrows
39,645,255
Factor Arrows
33,215,085
Factor Arrows
31,071,695
Factor Arrows
5214,339
Factor Arrows
1911,281
Factor Arrows
29389

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:

3, 5, 19, 29, 389

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 19 x 29 x 389 = 28,935,765

This can also be written as 33 x 51 x 191 x 291 x 3891 = 28,935,765

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


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