Q: What are the prime factors of the number 855,918?

 A: 2, 3, 7, 6793

Why are those the prime factors of the number 855,918?

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 855,918

855,918
Factor Arrows
2427,959
Factor Arrows
3142,653
Factor Arrows
347,551
Factor Arrows
76,793

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, 7, 6793

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 6,793 = 855,918

This can also be written as 21 x 32 x 71 x 6,7931 = 855,918

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


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