Q: What are the prime factors of the number 687,585,600?

 A: 2, 3, 5, 13, 3673

Why are those the prime factors of the number 687,585,600?

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 687,585,600

687,585,600
Factor Arrows
2343,792,800
Factor Arrows
2171,896,400
Factor Arrows
285,948,200
Factor Arrows
242,974,100
Factor Arrows
221,487,050
Factor Arrows
210,743,525
Factor Arrows
33,581,175
Factor Arrows
31,193,725
Factor Arrows
5238,745
Factor Arrows
547,749
Factor Arrows
133,673

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, 13, 3673

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 3 x 3 x 5 x 5 x 13 x 3,673 = 687,585,600

This can also be written as 26 x 32 x 52 x 131 x 3,6731 = 687,585,600

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


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