Q: What are the prime factors of the number 127,017,261?

 A: 3, 7, 19, 31, 163

Why are those the prime factors of the number 127,017,261?

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 127,017,261

127,017,261
Factor Arrows
342,339,087
Factor Arrows
314,113,029
Factor Arrows
34,704,343
Factor Arrows
7672,049
Factor Arrows
796,007
Factor Arrows
195,053
Factor Arrows
31163

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, 19, 31, 163

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 7 x 7 x 19 x 31 x 163 = 127,017,261

This can also be written as 33 x 72 x 191 x 311 x 1631 = 127,017,261

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


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