Q: What are the prime factors of the number 408,102?

 A: 2, 3, 17, 4001

Why are those the prime factors of the number 408,102?

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 408,102

408,102
Factor Arrows
2204,051
Factor Arrows
368,017
Factor Arrows
174,001

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, 4001

We can check our work by multiplying all of the prime factors together: 2 x 3 x 17 x 4,001 = 408,102

This can also be written as 21 x 31 x 171 x 4,0011 = 408,102

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


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