Q: What are the prime factors of the number 30,312,436?

 A: 2, 7, 11, 23, 389

Why are those the prime factors of the number 30,312,436?

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 30,312,436

30,312,436
Factor Arrows
215,156,218
Factor Arrows
27,578,109
Factor Arrows
71,082,587
Factor Arrows
1198,417
Factor Arrows
118,947
Factor Arrows
23389

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, 7, 11, 23, 389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 11 x 11 x 23 x 389 = 30,312,436

This can also be written as 22 x 71 x 112 x 231 x 3891 = 30,312,436

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


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