Q: What are the prime factors of the number 13,312,512?

 A: 2, 3, 107

Why are those the prime factors of the number 13,312,512?

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 13,312,512

13,312,512
Factor Arrows
26,656,256
Factor Arrows
23,328,128
Factor Arrows
21,664,064
Factor Arrows
2832,032
Factor Arrows
2416,016
Factor Arrows
2208,008
Factor Arrows
2104,004
Factor Arrows
252,002
Factor Arrows
226,001
Factor Arrows
38,667
Factor Arrows
32,889
Factor Arrows
3963
Factor Arrows
3321
Factor Arrows
3107

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, 107

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 3 x 3 x 3 x 3 x 3 x 107 = 13,312,512

This can also be written as 29 x 35 x 1071 = 13,312,512

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


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