Q: What are the prime factors of the number 17,577?

 A: 3, 7, 31

Why are those the prime factors of the number 17,577?

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 17,577

17,577
Factor Arrows
35,859
Factor Arrows
31,953
Factor Arrows
3651
Factor Arrows
3217
Factor Arrows
731

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, 7, 31

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 31 = 17,577

This can also be written as 34 x 71 x 311 = 17,577

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


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