Q: What are the prime factors of the number 17,581,239?

 A: 3, 13, 3853

Why are those the prime factors of the number 17,581,239?

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 17,581,239

17,581,239
Factor Arrows
35,860,413
Factor Arrows
31,953,471
Factor Arrows
3651,157
Factor Arrows
1350,089
Factor Arrows
133,853

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, 13, 3853

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 13 x 13 x 3,853 = 17,581,239

This can also be written as 33 x 132 x 3,8531 = 17,581,239

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


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