Q: What are the prime factors of the number 11,540,640?

 A: 2, 3, 5, 24043

Why are those the prime factors of the number 11,540,640?

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 11,540,640

11,540,640
Factor Arrows
25,770,320
Factor Arrows
22,885,160
Factor Arrows
21,442,580
Factor Arrows
2721,290
Factor Arrows
2360,645
Factor Arrows
3120,215
Factor Arrows
524,043

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, 24043

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 24,043 = 11,540,640

This can also be written as 25 x 31 x 51 x 24,0431 = 11,540,640

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


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