Q: What are the prime factors of the number 115,565,049?

 A: 3, 19, 61, 1231

Why are those the prime factors of the number 115,565,049?

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 115,565,049

115,565,049
Factor Arrows
338,521,683
Factor Arrows
312,840,561
Factor Arrows
34,280,187
Factor Arrows
31,426,729
Factor Arrows
1975,091
Factor Arrows
611,231

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, 19, 61, 1231

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 19 x 61 x 1,231 = 115,565,049

This can also be written as 34 x 191 x 611 x 1,2311 = 115,565,049

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


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