Q: What are the prime factors of the number 165,304,040?

 A: 2, 5, 11, 43, 8737

Why are those the prime factors of the number 165,304,040?

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 165,304,040

165,304,040
Factor Arrows
282,652,020
Factor Arrows
241,326,010
Factor Arrows
220,663,005
Factor Arrows
54,132,601
Factor Arrows
11375,691
Factor Arrows
438,737

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, 43, 8737

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 11 x 43 x 8,737 = 165,304,040

This can also be written as 23 x 51 x 111 x 431 x 8,7371 = 165,304,040

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


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