Q: What are the prime factors of the number 997,580?

 A: 2, 5, 31, 1609

Why are those the prime factors of the number 997,580?

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 997,580

997,580
Factor Arrows
2498,790
Factor Arrows
2249,395
Factor Arrows
549,879
Factor Arrows
311,609

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:

2, 5, 31, 1609

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 31 x 1,609 = 997,580

This can also be written as 22 x 51 x 311 x 1,6091 = 997,580

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


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