Q: What are the prime factors of the number 2,491,584?

 A: 2, 3, 19, 683

Why are those the prime factors of the number 2,491,584?

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 2,491,584

2,491,584
Factor Arrows
21,245,792
Factor Arrows
2622,896
Factor Arrows
2311,448
Factor Arrows
2155,724
Factor Arrows
277,862
Factor Arrows
238,931
Factor Arrows
312,977
Factor Arrows
19683

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, 19, 683

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 3 x 19 x 683 = 2,491,584

This can also be written as 26 x 31 x 191 x 6831 = 2,491,584

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


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