Q: What are the prime factors of the number 403,272?

 A: 2, 3, 1867

Why are those the prime factors of the number 403,272?

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 403,272

403,272
Factor Arrows
2201,636
Factor Arrows
2100,818
Factor Arrows
250,409
Factor Arrows
316,803
Factor Arrows
35,601
Factor Arrows
31,867

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, 1867

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 1,867 = 403,272

This can also be written as 23 x 33 x 1,8671 = 403,272

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


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