Q: What are the prime factors of the number 340,123,329?

 A: 3, 7, 13, 601, 691

Why are those the prime factors of the number 340,123,329?

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 340,123,329

340,123,329
Factor Arrows
3113,374,443
Factor Arrows
337,791,481
Factor Arrows
75,398,783
Factor Arrows
13415,291
Factor Arrows
601691

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, 13, 601, 691

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 13 x 601 x 691 = 340,123,329

This can also be written as 32 x 71 x 131 x 6011 x 6911 = 340,123,329

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


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