Q: What are the prime factors of the number 261,305,055?

 A: 3, 5, 11, 175963

Why are those the prime factors of the number 261,305,055?

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 261,305,055

261,305,055
Factor Arrows
387,101,685
Factor Arrows
329,033,895
Factor Arrows
39,677,965
Factor Arrows
51,935,593
Factor Arrows
11175,963

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, 5, 11, 175963

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 11 x 175,963 = 261,305,055

This can also be written as 33 x 51 x 111 x 175,9631 = 261,305,055

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


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