Q: What are the prime factors of the number 1,180,320?

 A: 2, 3, 5, 2459

Why are those the prime factors of the number 1,180,320?

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 1,180,320

1,180,320
Factor Arrows
2590,160
Factor Arrows
2295,080
Factor Arrows
2147,540
Factor Arrows
273,770
Factor Arrows
236,885
Factor Arrows
312,295
Factor Arrows
52,459

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, 2459

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 2,459 = 1,180,320

This can also be written as 25 x 31 x 51 x 2,4591 = 1,180,320

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


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