Q: What are the prime factors of the number 30,127,872?

 A: 2, 3, 39229

Why are those the prime factors of the number 30,127,872?

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 30,127,872

30,127,872
Factor Arrows
215,063,936
Factor Arrows
27,531,968
Factor Arrows
23,765,984
Factor Arrows
21,882,992
Factor Arrows
2941,496
Factor Arrows
2470,748
Factor Arrows
2235,374
Factor Arrows
2117,687
Factor Arrows
339,229

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, 39229

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 3 x 39,229 = 30,127,872

This can also be written as 28 x 31 x 39,2291 = 30,127,872

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


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