Q: What are the prime factors of the number 408,612?

 A: 2, 3, 17, 2003

Why are those the prime factors of the number 408,612?

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 408,612

408,612
Factor Arrows
2204,306
Factor Arrows
2102,153
Factor Arrows
334,051
Factor Arrows
172,003

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, 2003

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 17 x 2,003 = 408,612

This can also be written as 22 x 31 x 171 x 2,0031 = 408,612

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


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