Q: What are the prime factors of the number 30,111,232?

 A: 2, 23, 2557

Why are those the prime factors of the number 30,111,232?

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 30,111,232

30,111,232
Factor Arrows
215,055,616
Factor Arrows
27,527,808
Factor Arrows
23,763,904
Factor Arrows
21,881,952
Factor Arrows
2940,976
Factor Arrows
2470,488
Factor Arrows
2235,244
Factor Arrows
2117,622
Factor Arrows
258,811
Factor Arrows
232,557

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, 23, 2557

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 23 x 2,557 = 30,111,232

This can also be written as 29 x 231 x 2,5571 = 30,111,232

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


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