Q: What are the prime factors of the number 30,256,730?

 A: 2, 5, 7, 23, 18793

Why are those the prime factors of the number 30,256,730?

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 30,256,730

30,256,730
Factor Arrows
215,128,365
Factor Arrows
53,025,673
Factor Arrows
7432,239
Factor Arrows
2318,793

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, 23, 18793

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 23 x 18,793 = 30,256,730

This can also be written as 21 x 51 x 71 x 231 x 18,7931 = 30,256,730

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


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