Q: What are the prime factors of the number 27,872,343?

 A: 3, 23, 4987

Why are those the prime factors of the number 27,872,343?

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 27,872,343

27,872,343
Factor Arrows
39,290,781
Factor Arrows
33,096,927
Factor Arrows
31,032,309
Factor Arrows
3344,103
Factor Arrows
3114,701
Factor Arrows
234,987

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:

3, 23, 4987

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 23 x 4,987 = 27,872,343

This can also be written as 35 x 231 x 4,9871 = 27,872,343

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


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