Q: What are the prime factors of the number 12,551,110?

 A: 2, 5, 11, 13, 67, 131

Why are those the prime factors of the number 12,551,110?

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 12,551,110

12,551,110
Factor Arrows
26,275,555
Factor Arrows
51,255,111
Factor Arrows
11114,101
Factor Arrows
138,777
Factor Arrows
67131

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, 5, 11, 13, 67, 131

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 13 x 67 x 131 = 12,551,110

This can also be written as 21 x 51 x 111 x 131 x 671 x 1311 = 12,551,110

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


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