Q: What are the prime factors of the number 17,944,656?

 A: 2, 3, 17, 21991

Why are those the prime factors of the number 17,944,656?

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 17,944,656

17,944,656
Factor Arrows
28,972,328
Factor Arrows
24,486,164
Factor Arrows
22,243,082
Factor Arrows
21,121,541
Factor Arrows
3373,847
Factor Arrows
1721,991

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, 17, 21991

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 17 x 21,991 = 17,944,656

This can also be written as 24 x 31 x 171 x 21,9911 = 17,944,656

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


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