Q: What are the prime factors of the number 3,175,424?

 A: 2, 7, 443

Why are those the prime factors of the number 3,175,424?

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 3,175,424

3,175,424
Factor Arrows
21,587,712
Factor Arrows
2793,856
Factor Arrows
2396,928
Factor Arrows
2198,464
Factor Arrows
299,232
Factor Arrows
249,616
Factor Arrows
224,808
Factor Arrows
212,404
Factor Arrows
26,202
Factor Arrows
23,101
Factor Arrows
7443

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, 7, 443

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 443 = 3,175,424

This can also be written as 210 x 71 x 4431 = 3,175,424

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


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