Q: What are the prime factors of the number 240,331,329?

 A: 3, 7, 17, 32057

Why are those the prime factors of the number 240,331,329?

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 240,331,329

240,331,329
Factor Arrows
380,110,443
Factor Arrows
326,703,481
Factor Arrows
73,814,783
Factor Arrows
7544,969
Factor Arrows
1732,057

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, 7, 17, 32057

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 7 x 17 x 32,057 = 240,331,329

This can also be written as 32 x 72 x 171 x 32,0571 = 240,331,329

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


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