Q: What are the prime factors of the number 165,813,615?

 A: 3, 5, 11, 111659

Why are those the prime factors of the number 165,813,615?

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 165,813,615

165,813,615
Factor Arrows
355,271,205
Factor Arrows
318,423,735
Factor Arrows
36,141,245
Factor Arrows
51,228,249
Factor Arrows
11111,659

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, 111659

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 11 x 111,659 = 165,813,615

This can also be written as 33 x 51 x 111 x 111,6591 = 165,813,615

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


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