Q: What are the prime factors of the number 1,332,320?

 A: 2, 5, 11, 757

Why are those the prime factors of the number 1,332,320?

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 1,332,320

1,332,320
Factor Arrows
2666,160
Factor Arrows
2333,080
Factor Arrows
2166,540
Factor Arrows
283,270
Factor Arrows
241,635
Factor Arrows
58,327
Factor Arrows
11757

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, 757

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 757 = 1,332,320

This can also be written as 25 x 51 x 111 x 7571 = 1,332,320

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


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