Q: What are the prime factors of the number 857,778?

 A: 2, 3, 142963

Why are those the prime factors of the number 857,778?

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 857,778

857,778
Factor Arrows
2428,889
Factor Arrows
3142,963

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, 142963

We can check our work by multiplying all of the prime factors together: 2 x 3 x 142,963 = 857,778

This can also be written as 21 x 31 x 142,9631 = 857,778

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


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