Q: What are the prime factors of the number 865,856?

 A: 2, 83, 163

Why are those the prime factors of the number 865,856?

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 865,856

865,856
Factor Arrows
2432,928
Factor Arrows
2216,464
Factor Arrows
2108,232
Factor Arrows
254,116
Factor Arrows
227,058
Factor Arrows
213,529
Factor Arrows
83163

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, 83, 163

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 83 x 163 = 865,856

This can also be written as 26 x 831 x 1631 = 865,856

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


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