Q: What are the prime factors of the number 3,315,072?

 A: 2, 3, 89, 97

Why are those the prime factors of the number 3,315,072?

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 3,315,072

3,315,072
Factor Arrows
21,657,536
Factor Arrows
2828,768
Factor Arrows
2414,384
Factor Arrows
2207,192
Factor Arrows
2103,596
Factor Arrows
251,798
Factor Arrows
225,899
Factor Arrows
38,633
Factor Arrows
8997

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, 89, 97

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 3 x 89 x 97 = 3,315,072

This can also be written as 27 x 31 x 891 x 971 = 3,315,072

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


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