Q: What are the prime factors of the number 3,944,480?

 A: 2, 5, 89, 277

Why are those the prime factors of the number 3,944,480?

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 3,944,480

3,944,480
Factor Arrows
21,972,240
Factor Arrows
2986,120
Factor Arrows
2493,060
Factor Arrows
2246,530
Factor Arrows
2123,265
Factor Arrows
524,653
Factor Arrows
89277

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, 89, 277

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 89 x 277 = 3,944,480

This can also be written as 25 x 51 x 891 x 2771 = 3,944,480

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


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