Q: What are the prime factors of the number 27,928,272?

 A: 2, 3, 31, 137

Why are those the prime factors of the number 27,928,272?

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 27,928,272

27,928,272
Factor Arrows
213,964,136
Factor Arrows
26,982,068
Factor Arrows
23,491,034
Factor Arrows
21,745,517
Factor Arrows
3581,839
Factor Arrows
3118,769
Factor Arrows
137137

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, 31, 137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 31 x 137 x 137 = 27,928,272

This can also be written as 24 x 31 x 311 x 1372 = 27,928,272

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


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