Q: What are the prime factors of the number 12,909,875?

 A: 5, 11, 41, 229

Why are those the prime factors of the number 12,909,875?

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 12,909,875

12,909,875
Factor Arrows
52,581,975
Factor Arrows
5516,395
Factor Arrows
5103,279
Factor Arrows
119,389
Factor Arrows
41229

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:

5, 11, 41, 229

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 11 x 41 x 229 = 12,909,875

This can also be written as 53 x 111 x 411 x 2291 = 12,909,875

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


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