Q: What are the prime factors of the number 868,128?

 A: 2, 3, 9043

Why are those the prime factors of the number 868,128?

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 868,128

868,128
Factor Arrows
2434,064
Factor Arrows
2217,032
Factor Arrows
2108,516
Factor Arrows
254,258
Factor Arrows
227,129
Factor Arrows
39,043

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, 3, 9043

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 9,043 = 868,128

This can also be written as 25 x 31 x 9,0431 = 868,128

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


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