Q: What are the prime factors of the number 13,265,856?

 A: 2, 3, 853

Why are those the prime factors of the number 13,265,856?

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 13,265,856

13,265,856
Factor Arrows
26,632,928
Factor Arrows
23,316,464
Factor Arrows
21,658,232
Factor Arrows
2829,116
Factor Arrows
2414,558
Factor Arrows
2207,279
Factor Arrows
369,093
Factor Arrows
323,031
Factor Arrows
37,677
Factor Arrows
32,559
Factor Arrows
3853

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, 853

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 3 x 3 x 3 x 3 x 3 x 853 = 13,265,856

This can also be written as 26 x 35 x 8531 = 13,265,856

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


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