Q: What are the prime factors of the number 11,185,005?

 A: 3, 5, 13, 41, 1399

Why are those the prime factors of the number 11,185,005?

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 11,185,005

11,185,005
Factor Arrows
33,728,335
Factor Arrows
5745,667
Factor Arrows
1357,359
Factor Arrows
411,399

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:

3, 5, 13, 41, 1399

We can check our work by multiplying all of the prime factors together: 3 x 5 x 13 x 41 x 1,399 = 11,185,005

This can also be written as 31 x 51 x 131 x 411 x 1,3991 = 11,185,005

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


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