Q: What are the prime factors of the number 118,965?

 A: 3, 5, 7, 11, 103

Why are those the prime factors of the number 118,965?

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 118,965

118,965
Factor Arrows
339,655
Factor Arrows
57,931
Factor Arrows
71,133
Factor Arrows
11103

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, 7, 11, 103

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 11 x 103 = 118,965

This can also be written as 31 x 51 x 71 x 111 x 1031 = 118,965

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


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