Q: What are the prime factors of the number 408,168?

 A: 2, 3, 5669

Why are those the prime factors of the number 408,168?

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 408,168

408,168
Factor Arrows
2204,084
Factor Arrows
2102,042
Factor Arrows
251,021
Factor Arrows
317,007
Factor Arrows
35,669

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, 5669

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5,669 = 408,168

This can also be written as 23 x 32 x 5,6691 = 408,168

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


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