Q: What are the prime factors of the number 987,363?

 A: 3, 13, 29, 97

Why are those the prime factors of the number 987,363?

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 987,363

987,363
Factor Arrows
3329,121
Factor Arrows
3109,707
Factor Arrows
336,569
Factor Arrows
132,813
Factor Arrows
2997

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, 29, 97

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 13 x 29 x 97 = 987,363

This can also be written as 33 x 131 x 291 x 971 = 987,363

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


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