Q: What are the prime factors of the number 403,470?

 A: 2, 3, 5, 4483

Why are those the prime factors of the number 403,470?

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 403,470

403,470
Factor Arrows
2201,735
Factor Arrows
367,245
Factor Arrows
322,415
Factor Arrows
54,483

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, 5, 4483

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 4,483 = 403,470

This can also be written as 21 x 32 x 51 x 4,4831 = 403,470

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


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