Q: What are the prime factors of the number 30,516,948?

 A: 2, 3, 7, 11, 101, 109

Why are those the prime factors of the number 30,516,948?

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 30,516,948

30,516,948
Factor Arrows
215,258,474
Factor Arrows
27,629,237
Factor Arrows
32,543,079
Factor Arrows
3847,693
Factor Arrows
7121,099
Factor Arrows
1111,009
Factor Arrows
101109

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, 7, 11, 101, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 11 x 101 x 109 = 30,516,948

This can also be written as 22 x 32 x 71 x 111 x 1011 x 1091 = 30,516,948

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


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