Q: What are the prime factors of the number 1,439,328?

 A: 2, 3, 11, 29, 47

Why are those the prime factors of the number 1,439,328?

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 1,439,328

1,439,328
Factor Arrows
2719,664
Factor Arrows
2359,832
Factor Arrows
2179,916
Factor Arrows
289,958
Factor Arrows
244,979
Factor Arrows
314,993
Factor Arrows
111,363
Factor Arrows
2947

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, 11, 29, 47

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 11 x 29 x 47 = 1,439,328

This can also be written as 25 x 31 x 111 x 291 x 471 = 1,439,328

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


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