Q: What are the prime factors of the number 3,025,440?

 A: 2, 3, 5, 11, 191

Why are those the prime factors of the number 3,025,440?

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 3,025,440

3,025,440
Factor Arrows
21,512,720
Factor Arrows
2756,360
Factor Arrows
2378,180
Factor Arrows
2189,090
Factor Arrows
294,545
Factor Arrows
331,515
Factor Arrows
310,505
Factor Arrows
52,101
Factor Arrows
11191

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, 11, 191

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 3 x 5 x 11 x 191 = 3,025,440

This can also be written as 25 x 32 x 51 x 111 x 1911 = 3,025,440

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


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