Q: What are the prime factors of the number 679,172?

 A: 2, 13, 37, 353

Why are those the prime factors of the number 679,172?

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 679,172

679,172
Factor Arrows
2339,586
Factor Arrows
2169,793
Factor Arrows
1313,061
Factor Arrows
37353

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:

2, 13, 37, 353

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 37 x 353 = 679,172

This can also be written as 22 x 131 x 371 x 3531 = 679,172

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


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