Q: What are the prime factors of the number 28,287,507?

 A: 3, 17, 43, 12899

Why are those the prime factors of the number 28,287,507?

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 28,287,507

28,287,507
Factor Arrows
39,429,169
Factor Arrows
17554,657
Factor Arrows
4312,899

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, 17, 43, 12899

We can check our work by multiplying all of the prime factors together: 3 x 17 x 43 x 12,899 = 28,287,507

This can also be written as 31 x 171 x 431 x 12,8991 = 28,287,507

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


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