Q: What are the prime factors of the number 30,135,645?

 A: 3, 5, 17, 1459

Why are those the prime factors of the number 30,135,645?

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 30,135,645

30,135,645
Factor Arrows
310,045,215
Factor Arrows
33,348,405
Factor Arrows
31,116,135
Factor Arrows
3372,045
Factor Arrows
3124,015
Factor Arrows
524,803
Factor Arrows
171,459

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:

3, 5, 17, 1459

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 17 x 1,459 = 30,135,645

This can also be written as 35 x 51 x 171 x 1,4591 = 30,135,645

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


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