Q: What are the prime factors of the number 13,939,471?

 A: 7, 13, 79, 277

Why are those the prime factors of the number 13,939,471?

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 13,939,471

13,939,471
Factor Arrows
71,991,353
Factor Arrows
7284,479
Factor Arrows
1321,883
Factor Arrows
79277

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:

7, 13, 79, 277

We can check our work by multiplying all of the prime factors together: 7 x 7 x 13 x 79 x 277 = 13,939,471

This can also be written as 72 x 131 x 791 x 2771 = 13,939,471

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


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