Q: What are the prime factors of the number 30,347,072?

 A: 2, 7, 9677

Why are those the prime factors of the number 30,347,072?

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 30,347,072

30,347,072
Factor Arrows
215,173,536
Factor Arrows
27,586,768
Factor Arrows
23,793,384
Factor Arrows
21,896,692
Factor Arrows
2948,346
Factor Arrows
2474,173
Factor Arrows
767,739
Factor Arrows
79,677

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, 7, 9677

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 7 x 7 x 9,677 = 30,347,072

This can also be written as 26 x 72 x 9,6771 = 30,347,072

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


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