Q: What are the prime factors of the number 431,288?

 A: 2, 11, 13, 29

Why are those the prime factors of the number 431,288?

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 431,288

431,288
Factor Arrows
2215,644
Factor Arrows
2107,822
Factor Arrows
253,911
Factor Arrows
114,901
Factor Arrows
13377
Factor Arrows
1329

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, 11, 13, 29

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 13 x 13 x 29 = 431,288

This can also be written as 23 x 111 x 132 x 291 = 431,288

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


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