Q: What are the prime factors of the number 687,071,235?

 A: 3, 5, 17, 41, 65717

Why are those the prime factors of the number 687,071,235?

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 687,071,235

687,071,235
Factor Arrows
3229,023,745
Factor Arrows
545,804,749
Factor Arrows
172,694,397
Factor Arrows
4165,717

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:

3, 5, 17, 41, 65717

We can check our work by multiplying all of the prime factors together: 3 x 5 x 17 x 41 x 65,717 = 687,071,235

This can also be written as 31 x 51 x 171 x 411 x 65,7171 = 687,071,235

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


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