Q: What are the prime factors of the number 6,857,600?

 A: 2, 5, 2143

Why are those the prime factors of the number 6,857,600?

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 6,857,600

6,857,600
Factor Arrows
23,428,800
Factor Arrows
21,714,400
Factor Arrows
2857,200
Factor Arrows
2428,600
Factor Arrows
2214,300
Factor Arrows
2107,150
Factor Arrows
253,575
Factor Arrows
510,715
Factor Arrows
52,143

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, 5, 2143

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 2,143 = 6,857,600

This can also be written as 27 x 52 x 2,1431 = 6,857,600

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


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