Q: What are the prime factors of the number 30,231,040?

 A: 2, 5, 7, 241

Why are those the prime factors of the number 30,231,040?

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 30,231,040

30,231,040
Factor Arrows
215,115,520
Factor Arrows
27,557,760
Factor Arrows
23,778,880
Factor Arrows
21,889,440
Factor Arrows
2944,720
Factor Arrows
2472,360
Factor Arrows
2236,180
Factor Arrows
2118,090
Factor Arrows
259,045
Factor Arrows
511,809
Factor Arrows
71,687
Factor Arrows
7241

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, 7, 241

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 5 x 7 x 7 x 241 = 30,231,040

This can also be written as 29 x 51 x 72 x 2411 = 30,231,040

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


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