Q: What are the prime factors of the number 310,015,552?

 A: 2, 7, 11, 19, 43

Why are those the prime factors of the number 310,015,552?

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 310,015,552

310,015,552
Factor Arrows
2155,007,776
Factor Arrows
277,503,888
Factor Arrows
238,751,944
Factor Arrows
219,375,972
Factor Arrows
29,687,986
Factor Arrows
24,843,993
Factor Arrows
7691,999
Factor Arrows
798,857
Factor Arrows
118,987
Factor Arrows
11817
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, 7, 11, 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 7 x 7 x 11 x 11 x 19 x 43 = 310,015,552

This can also be written as 26 x 72 x 112 x 191 x 431 = 310,015,552

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


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