Q: What are the prime factors of the number 686,685,244?

 A: 2, 7, 1063, 23071

Why are those the prime factors of the number 686,685,244?

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 686,685,244

686,685,244
Factor Arrows
2343,342,622
Factor Arrows
2171,671,311
Factor Arrows
724,524,473
Factor Arrows
1,06323,071

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, 7, 1063, 23071

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 1,063 x 23,071 = 686,685,244

This can also be written as 22 x 71 x 1,0631 x 23,0711 = 686,685,244

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


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