Q: What are the prime factors of the number 30,117,888?

 A: 2, 3, 19, 43

Why are those the prime factors of the number 30,117,888?

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 30,117,888

30,117,888
Factor Arrows
215,058,944
Factor Arrows
27,529,472
Factor Arrows
23,764,736
Factor Arrows
21,882,368
Factor Arrows
2941,184
Factor Arrows
2470,592
Factor Arrows
2235,296
Factor Arrows
2117,648
Factor Arrows
258,824
Factor Arrows
229,412
Factor Arrows
214,706
Factor Arrows
27,353
Factor Arrows
32,451
Factor Arrows
3817
Factor Arrows
1943

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, 3, 19, 43

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 2 x 2 x 2 x 3 x 3 x 19 x 43 = 30,117,888

This can also be written as 212 x 32 x 191 x 431 = 30,117,888

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


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