Q: What are the prime factors of the number 13,728,900?

 A: 2, 3, 5, 45763

Why are those the prime factors of the number 13,728,900?

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 13,728,900

13,728,900
Factor Arrows
26,864,450
Factor Arrows
23,432,225
Factor Arrows
31,144,075
Factor Arrows
5228,815
Factor Arrows
545,763

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, 45763

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 45,763 = 13,728,900

This can also be written as 22 x 31 x 52 x 45,7631 = 13,728,900

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


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