Q: What are the prime factors of the number 6,857,520?

 A: 2, 3, 5, 28573

Why are those the prime factors of the number 6,857,520?

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 6,857,520

6,857,520
Factor Arrows
23,428,760
Factor Arrows
21,714,380
Factor Arrows
2857,190
Factor Arrows
2428,595
Factor Arrows
3142,865
Factor Arrows
528,573

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, 28573

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 28,573 = 6,857,520

This can also be written as 24 x 31 x 51 x 28,5731 = 6,857,520

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


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