Q: What are the prime factors of the number 211,442,049?

 A: 3, 7, 13, 47, 1831

Why are those the prime factors of the number 211,442,049?

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 211,442,049

211,442,049
Factor Arrows
370,480,683
Factor Arrows
323,493,561
Factor Arrows
37,831,187
Factor Arrows
71,118,741
Factor Arrows
1386,057
Factor Arrows
471,831

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:

3, 7, 13, 47, 1831

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 13 x 47 x 1,831 = 211,442,049

This can also be written as 33 x 71 x 131 x 471 x 1,8311 = 211,442,049

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


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