Q: What are the prime factors of the number 868,672?

 A: 2, 7, 277

Why are those the prime factors of the number 868,672?

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 868,672

868,672
Factor Arrows
2434,336
Factor Arrows
2217,168
Factor Arrows
2108,584
Factor Arrows
254,292
Factor Arrows
227,146
Factor Arrows
213,573
Factor Arrows
71,939
Factor Arrows
7277

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, 7, 277

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 7 x 7 x 277 = 868,672

This can also be written as 26 x 72 x 2771 = 868,672

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


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