Q: What are the prime factors of the number 3,074,720?

 A: 2, 5, 11, 1747

Why are those the prime factors of the number 3,074,720?

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 3,074,720

3,074,720
Factor Arrows
21,537,360
Factor Arrows
2768,680
Factor Arrows
2384,340
Factor Arrows
2192,170
Factor Arrows
296,085
Factor Arrows
519,217
Factor Arrows
111,747

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, 5, 11, 1747

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 1,747 = 3,074,720

This can also be written as 25 x 51 x 111 x 1,7471 = 3,074,720

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


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