Q: What are the prime factors of the number 165,215,325?

 A: 3, 5, 11, 23, 8707

Why are those the prime factors of the number 165,215,325?

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 165,215,325

165,215,325
Factor Arrows
355,071,775
Factor Arrows
511,014,355
Factor Arrows
52,202,871
Factor Arrows
11200,261
Factor Arrows
238,707

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, 11, 23, 8707

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 11 x 23 x 8,707 = 165,215,325

This can also be written as 31 x 52 x 111 x 231 x 8,7071 = 165,215,325

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


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