Q: What are the prime factors of the number 2,721,256?

 A: 2, 19, 17903

Why are those the prime factors of the number 2,721,256?

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 2,721,256

2,721,256
Factor Arrows
21,360,628
Factor Arrows
2680,314
Factor Arrows
2340,157
Factor Arrows
1917,903

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, 19, 17903

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 19 x 17,903 = 2,721,256

This can also be written as 23 x 191 x 17,9031 = 2,721,256

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


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