Q: What are the prime factors of the number 431,802?

 A: 2, 3, 7, 23, 149

Why are those the prime factors of the number 431,802?

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 431,802

431,802
Factor Arrows
2215,901
Factor Arrows
371,967
Factor Arrows
323,989
Factor Arrows
73,427
Factor Arrows
23149

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, 7, 23, 149

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 23 x 149 = 431,802

This can also be written as 21 x 32 x 71 x 231 x 1491 = 431,802

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


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