Q: What are the prime factors of the number 205,241,445?

 A: 3, 5, 251, 673

Why are those the prime factors of the number 205,241,445?

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 205,241,445

205,241,445
Factor Arrows
368,413,815
Factor Arrows
322,804,605
Factor Arrows
37,601,535
Factor Arrows
32,533,845
Factor Arrows
3844,615
Factor Arrows
5168,923
Factor Arrows
251673

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, 251, 673

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 251 x 673 = 205,241,445

This can also be written as 35 x 51 x 2511 x 6731 = 205,241,445

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


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