Q: What are the prime factors of the number 10,304,640?

 A: 2, 3, 5, 1789

Why are those the prime factors of the number 10,304,640?

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 10,304,640

10,304,640
Factor Arrows
25,152,320
Factor Arrows
22,576,160
Factor Arrows
21,288,080
Factor Arrows
2644,040
Factor Arrows
2322,020
Factor Arrows
2161,010
Factor Arrows
280,505
Factor Arrows
326,835
Factor Arrows
38,945
Factor Arrows
51,789

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, 5, 1789

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 3 x 5 x 1,789 = 10,304,640

This can also be written as 27 x 32 x 51 x 1,7891 = 10,304,640

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


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