Q: What are the prime factors of the number 847,315?

 A: 5, 7, 43, 563

Why are those the prime factors of the number 847,315?

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 847,315

847,315
Factor Arrows
5169,463
Factor Arrows
724,209
Factor Arrows
43563

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:

5, 7, 43, 563

We can check our work by multiplying all of the prime factors together: 5 x 7 x 43 x 563 = 847,315

This can also be written as 51 x 71 x 431 x 5631 = 847,315

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


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