Q: What are the prime factors of the number 679,360?

 A: 2, 5, 11, 193

Why are those the prime factors of the number 679,360?

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 679,360

679,360
Factor Arrows
2339,680
Factor Arrows
2169,840
Factor Arrows
284,920
Factor Arrows
242,460
Factor Arrows
221,230
Factor Arrows
210,615
Factor Arrows
52,123
Factor Arrows
11193

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, 5, 11, 193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 11 x 193 = 679,360

This can also be written as 26 x 51 x 111 x 1931 = 679,360

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


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