Q: What are the prime factors of the number 10,745,856?

 A: 2, 3, 11, 53

Why are those the prime factors of the number 10,745,856?

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 10,745,856

10,745,856
Factor Arrows
25,372,928
Factor Arrows
22,686,464
Factor Arrows
21,343,232
Factor Arrows
2671,616
Factor Arrows
2335,808
Factor Arrows
2167,904
Factor Arrows
283,952
Factor Arrows
241,976
Factor Arrows
220,988
Factor Arrows
210,494
Factor Arrows
25,247
Factor Arrows
31,749
Factor Arrows
3583
Factor Arrows
1153

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, 11, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 53 = 10,745,856

This can also be written as 211 x 32 x 111 x 531 = 10,745,856

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


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