Q: What are the prime factors of the number 354,672?

 A: 2, 3, 821

Why are those the prime factors of the number 354,672?

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 354,672

354,672
Factor Arrows
2177,336
Factor Arrows
288,668
Factor Arrows
244,334
Factor Arrows
222,167
Factor Arrows
37,389
Factor Arrows
32,463
Factor Arrows
3821

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, 821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 821 = 354,672

This can also be written as 24 x 33 x 8211 = 354,672

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


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