Q: What are the prime factors of the number 12,951,744?

 A: 2, 3, 13, 5189

Why are those the prime factors of the number 12,951,744?

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 12,951,744

12,951,744
Factor Arrows
26,475,872
Factor Arrows
23,237,936
Factor Arrows
21,618,968
Factor Arrows
2809,484
Factor Arrows
2404,742
Factor Arrows
2202,371
Factor Arrows
367,457
Factor Arrows
135,189

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, 13, 5189

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 13 x 5,189 = 12,951,744

This can also be written as 26 x 31 x 131 x 5,1891 = 12,951,744

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


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