Q: What are the prime factors of the number 998,975?

 A: 5, 31, 1289

Why are those the prime factors of the number 998,975?

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 998,975

998,975
Factor Arrows
5199,795
Factor Arrows
539,959
Factor Arrows
311,289

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:

5, 31, 1289

We can check our work by multiplying all of the prime factors together: 5 x 5 x 31 x 1,289 = 998,975

This can also be written as 52 x 311 x 1,2891 = 998,975

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


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