Q: What are the prime factors of the number 378,688?

 A: 2, 61, 97

Why are those the prime factors of the number 378,688?

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 378,688

378,688
Factor Arrows
2189,344
Factor Arrows
294,672
Factor Arrows
247,336
Factor Arrows
223,668
Factor Arrows
211,834
Factor Arrows
25,917
Factor Arrows
6197

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, 61, 97

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 61 x 97 = 378,688

This can also be written as 26 x 611 x 971 = 378,688

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


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