Q: What are the prime factors of the number 12,993,500?

 A: 2, 5, 13, 1999

Why are those the prime factors of the number 12,993,500?

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 12,993,500

12,993,500
Factor Arrows
26,496,750
Factor Arrows
23,248,375
Factor Arrows
5649,675
Factor Arrows
5129,935
Factor Arrows
525,987
Factor Arrows
131,999

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, 13, 1999

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 13 x 1,999 = 12,993,500

This can also be written as 22 x 53 x 131 x 1,9991 = 12,993,500

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


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