Q: What are the prime factors of the number 2,398,256?

 A: 2, 7, 19, 23

Why are those the prime factors of the number 2,398,256?

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 2,398,256

2,398,256
Factor Arrows
21,199,128
Factor Arrows
2599,564
Factor Arrows
2299,782
Factor Arrows
2149,891
Factor Arrows
721,413
Factor Arrows
73,059
Factor Arrows
7437
Factor Arrows
1923

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, 7, 19, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 7 x 19 x 23 = 2,398,256

This can also be written as 24 x 73 x 191 x 231 = 2,398,256

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


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