Q: What are the prime factors of the number 14,040,320?

 A: 2, 5, 7, 1567

Why are those the prime factors of the number 14,040,320?

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 14,040,320

14,040,320
Factor Arrows
27,020,160
Factor Arrows
23,510,080
Factor Arrows
21,755,040
Factor Arrows
2877,520
Factor Arrows
2438,760
Factor Arrows
2219,380
Factor Arrows
2109,690
Factor Arrows
254,845
Factor Arrows
510,969
Factor Arrows
71,567

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, 5, 7, 1567

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 x 1,567 = 14,040,320

This can also be written as 28 x 51 x 71 x 1,5671 = 14,040,320

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


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