Q: What are the prime factors of the number 687,228,102?

 A: 2, 3, 11, 487, 7127

Why are those the prime factors of the number 687,228,102?

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 687,228,102

687,228,102
Factor Arrows
2343,614,051
Factor Arrows
3114,538,017
Factor Arrows
338,179,339
Factor Arrows
113,470,849
Factor Arrows
4877,127

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, 11, 487, 7127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 487 x 7,127 = 687,228,102

This can also be written as 21 x 32 x 111 x 4871 x 7,1271 = 687,228,102

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


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