Q: What are the prime factors of the number 265,965?

 A: 3, 5, 7, 17, 149

Why are those the prime factors of the number 265,965?

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 265,965

265,965
Factor Arrows
388,655
Factor Arrows
517,731
Factor Arrows
72,533
Factor Arrows
17149

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, 17, 149

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 17 x 149 = 265,965

This can also be written as 31 x 51 x 71 x 171 x 1491 = 265,965

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


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