Q: What are the prime factors of the number 12,840,828?

 A: 2, 3, 7, 11, 13, 1069

Why are those the prime factors of the number 12,840,828?

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 12,840,828

12,840,828
Factor Arrows
26,420,414
Factor Arrows
23,210,207
Factor Arrows
31,070,069
Factor Arrows
7152,867
Factor Arrows
1113,897
Factor Arrows
131,069

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, 11, 13, 1069

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 11 x 13 x 1,069 = 12,840,828

This can also be written as 22 x 31 x 71 x 111 x 131 x 1,0691 = 12,840,828

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


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