Q: What are the prime factors of the number 3,208,160?

 A: 2, 5, 20051

Why are those the prime factors of the number 3,208,160?

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 3,208,160

3,208,160
Factor Arrows
21,604,080
Factor Arrows
2802,040
Factor Arrows
2401,020
Factor Arrows
2200,510
Factor Arrows
2100,255
Factor Arrows
520,051

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, 20051

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 20,051 = 3,208,160

This can also be written as 25 x 51 x 20,0511 = 3,208,160

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


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