Q: What are the prime factors of the number 165,514,665?

 A: 3, 5, 503, 21937

Why are those the prime factors of the number 165,514,665?

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 165,514,665

165,514,665
Factor Arrows
355,171,555
Factor Arrows
511,034,311
Factor Arrows
50321,937

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, 503, 21937

We can check our work by multiplying all of the prime factors together: 3 x 5 x 503 x 21,937 = 165,514,665

This can also be written as 31 x 51 x 5031 x 21,9371 = 165,514,665

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


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