Q: What are the prime factors of the number 13,660,800?

 A: 2, 3, 5, 1423

Why are those the prime factors of the number 13,660,800?

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 13,660,800

13,660,800
Factor Arrows
26,830,400
Factor Arrows
23,415,200
Factor Arrows
21,707,600
Factor Arrows
2853,800
Factor Arrows
2426,900
Factor Arrows
2213,450
Factor Arrows
2106,725
Factor Arrows
335,575
Factor Arrows
57,115
Factor Arrows
51,423

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, 1423

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 2 x 3 x 5 x 5 x 1,423 = 13,660,800

This can also be written as 27 x 31 x 52 x 1,4231 = 13,660,800

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


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