Q: What are the prime factors of the number 4,016,480?

 A: 2, 5, 13, 1931

Why are those the prime factors of the number 4,016,480?

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 4,016,480

4,016,480
Factor Arrows
22,008,240
Factor Arrows
21,004,120
Factor Arrows
2502,060
Factor Arrows
2251,030
Factor Arrows
2125,515
Factor Arrows
525,103
Factor Arrows
131,931

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, 13, 1931

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 13 x 1,931 = 4,016,480

This can also be written as 25 x 51 x 131 x 1,9311 = 4,016,480

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


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