Q: What are the prime factors of the number 437,385?

 A: 3, 5, 13, 2243

Why are those the prime factors of the number 437,385?

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 437,385

437,385
Factor Arrows
3145,795
Factor Arrows
529,159
Factor Arrows
132,243

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, 13, 2243

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 2,243 = 437,385

This can also be written as 31 x 51 x 131 x 2,2431 = 437,385

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


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