Q: What are the prime factors of the number 855,848?

 A: 2, 7, 17, 29, 31

Why are those the prime factors of the number 855,848?

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 855,848

855,848
Factor Arrows
2427,924
Factor Arrows
2213,962
Factor Arrows
2106,981
Factor Arrows
715,283
Factor Arrows
17899
Factor Arrows
2931

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, 17, 29, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 17 x 29 x 31 = 855,848

This can also be written as 23 x 71 x 171 x 291 x 311 = 855,848

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


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