Q: What are the prime factors of the number 30,135,440?

 A: 2, 5, 163, 2311

Why are those the prime factors of the number 30,135,440?

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 30,135,440

30,135,440
Factor Arrows
215,067,720
Factor Arrows
27,533,860
Factor Arrows
23,766,930
Factor Arrows
21,883,465
Factor Arrows
5376,693
Factor Arrows
1632,311

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, 163, 2311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 163 x 2,311 = 30,135,440

This can also be written as 24 x 51 x 1631 x 2,3111 = 30,135,440

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


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