Q: What are the prime factors of the number 847,620?

 A: 2, 3, 5, 17, 277

Why are those the prime factors of the number 847,620?

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 847,620

847,620
Factor Arrows
2423,810
Factor Arrows
2211,905
Factor Arrows
370,635
Factor Arrows
323,545
Factor Arrows
54,709
Factor Arrows
17277

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, 17, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 17 x 277 = 847,620

This can also be written as 22 x 32 x 51 x 171 x 2771 = 847,620

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


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