Q: What are the prime factors of the number 126,585?

 A: 3, 5, 29, 97

Why are those the prime factors of the number 126,585?

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 126,585

126,585
Factor Arrows
342,195
Factor Arrows
314,065
Factor Arrows
52,813
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, 5, 29, 97

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 29 x 97 = 126,585

This can also be written as 32 x 51 x 291 x 971 = 126,585

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


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