Q: What are the prime factors of the number 13,515,600?

 A: 2, 3, 5, 7, 1609

Why are those the prime factors of the number 13,515,600?

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 13,515,600

13,515,600
Factor Arrows
26,757,800
Factor Arrows
23,378,900
Factor Arrows
21,689,450
Factor Arrows
2844,725
Factor Arrows
3281,575
Factor Arrows
556,315
Factor Arrows
511,263
Factor Arrows
71,609

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, 7, 1609

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 7 x 1,609 = 13,515,600

This can also be written as 24 x 31 x 52 x 71 x 1,6091 = 13,515,600

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


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