Q: What are the prime factors of the number 978,085?

 A: 5, 199, 983

Why are those the prime factors of the number 978,085?

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 978,085

978,085
Factor Arrows
5195,617
Factor Arrows
199983

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, 199, 983

We can check our work by multiplying all of the prime factors together: 5 x 199 x 983 = 978,085

This can also be written as 51 x 1991 x 9831 = 978,085

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


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