Q: What are the prime factors of the number 972,885?

 A: 3, 5, 79, 821

Why are those the prime factors of the number 972,885?

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 972,885

972,885
Factor Arrows
3324,295
Factor Arrows
564,859
Factor Arrows
79821

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, 5, 79, 821

We can check our work by multiplying all of the prime factors together: 3 x 5 x 79 x 821 = 972,885

This can also be written as 31 x 51 x 791 x 8211 = 972,885

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


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