Q: What are the prime factors of the number 13,468,896?

 A: 2, 3, 7, 17, 131

Why are those the prime factors of the number 13,468,896?

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 13,468,896

13,468,896
Factor Arrows
26,734,448
Factor Arrows
23,367,224
Factor Arrows
21,683,612
Factor Arrows
2841,806
Factor Arrows
2420,903
Factor Arrows
3140,301
Factor Arrows
346,767
Factor Arrows
315,589
Factor Arrows
72,227
Factor Arrows
17131

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, 7, 17, 131

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 x 17 x 131 = 13,468,896

This can also be written as 25 x 33 x 71 x 171 x 1311 = 13,468,896

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


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