Q: What are the prime factors of the number 12,885,480?

 A: 2, 3, 5, 41, 97

Why are those the prime factors of the number 12,885,480?

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 12,885,480

12,885,480
Factor Arrows
26,442,740
Factor Arrows
23,221,370
Factor Arrows
21,610,685
Factor Arrows
3536,895
Factor Arrows
3178,965
Factor Arrows
359,655
Factor Arrows
319,885
Factor Arrows
53,977
Factor Arrows
4197

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, 5, 41, 97

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 41 x 97 = 12,885,480

This can also be written as 23 x 34 x 51 x 411 x 971 = 12,885,480

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


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