Q: What are the prime factors of the number 408,624?

 A: 2, 3, 8513

Why are those the prime factors of the number 408,624?

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 408,624

408,624
Factor Arrows
2204,312
Factor Arrows
2102,156
Factor Arrows
251,078
Factor Arrows
225,539
Factor Arrows
38,513

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, 8513

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 8,513 = 408,624

This can also be written as 24 x 31 x 8,5131 = 408,624

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


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