Q: What are the prime factors of the number 3,660,800?

 A: 2, 5, 11, 13

Why are those the prime factors of the number 3,660,800?

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 3,660,800

3,660,800
Factor Arrows
21,830,400
Factor Arrows
2915,200
Factor Arrows
2457,600
Factor Arrows
2228,800
Factor Arrows
2114,400
Factor Arrows
257,200
Factor Arrows
228,600
Factor Arrows
214,300
Factor Arrows
27,150
Factor Arrows
23,575
Factor Arrows
5715
Factor Arrows
5143
Factor Arrows
1113

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, 11, 13

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 2 x 2 x 2 x 5 x 5 x 11 x 13 = 3,660,800

This can also be written as 210 x 52 x 111 x 131 = 3,660,800

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


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