Q: What are the prime factors of the number 378,828?

 A: 2, 3, 17, 619

Why are those the prime factors of the number 378,828?

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 378,828

378,828
Factor Arrows
2189,414
Factor Arrows
294,707
Factor Arrows
331,569
Factor Arrows
310,523
Factor Arrows
17619

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, 17, 619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 17 x 619 = 378,828

This can also be written as 22 x 32 x 171 x 6191 = 378,828

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


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