Q: What are the prime factors of the number 851,550?

 A: 2, 3, 5, 7, 811

Why are those the prime factors of the number 851,550?

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 851,550

851,550
Factor Arrows
2425,775
Factor Arrows
3141,925
Factor Arrows
528,385
Factor Arrows
55,677
Factor Arrows
7811

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, 5, 7, 811

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 7 x 811 = 851,550

This can also be written as 21 x 31 x 52 x 71 x 8111 = 851,550

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


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