Q: What are the prime factors of the number 340,123,413?

 A: 3, 7, 31, 41, 12743

Why are those the prime factors of the number 340,123,413?

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 340,123,413

340,123,413
Factor Arrows
3113,374,471
Factor Arrows
716,196,353
Factor Arrows
31522,463
Factor Arrows
4112,743

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, 31, 41, 12743

We can check our work by multiplying all of the prime factors together: 3 x 7 x 31 x 41 x 12,743 = 340,123,413

This can also be written as 31 x 71 x 311 x 411 x 12,7431 = 340,123,413

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


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