Q: What are the prime factors of the number 28,412,672?

 A: 2, 41, 2707

Why are those the prime factors of the number 28,412,672?

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 28,412,672

28,412,672
Factor Arrows
214,206,336
Factor Arrows
27,103,168
Factor Arrows
23,551,584
Factor Arrows
21,775,792
Factor Arrows
2887,896
Factor Arrows
2443,948
Factor Arrows
2221,974
Factor Arrows
2110,987
Factor Arrows
412,707

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, 41, 2707

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 41 x 2,707 = 28,412,672

This can also be written as 28 x 411 x 2,7071 = 28,412,672

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


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