Q: What are the prime factors of the number 2,575,170?

 A: 2, 3, 5, 13, 31, 71

Why are those the prime factors of the number 2,575,170?

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 2,575,170

2,575,170
Factor Arrows
21,287,585
Factor Arrows
3429,195
Factor Arrows
3143,065
Factor Arrows
528,613
Factor Arrows
132,201
Factor Arrows
3171

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, 3, 5, 13, 31, 71

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 13 x 31 x 71 = 2,575,170

This can also be written as 21 x 32 x 51 x 131 x 311 x 711 = 2,575,170

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


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