Q: What are the prime factors of the number 15,351,039?

 A: 3, 11, 5743

Why are those the prime factors of the number 15,351,039?

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 15,351,039

15,351,039
Factor Arrows
35,117,013
Factor Arrows
31,705,671
Factor Arrows
3568,557
Factor Arrows
3189,519
Factor Arrows
363,173
Factor Arrows
115,743

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, 11, 5743

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 11 x 5,743 = 15,351,039

This can also be written as 35 x 111 x 5,7431 = 15,351,039

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


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