Q: What are the prime factors of the number 205,568?

 A: 2, 11, 73

Why are those the prime factors of the number 205,568?

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 205,568

205,568
Factor Arrows
2102,784
Factor Arrows
251,392
Factor Arrows
225,696
Factor Arrows
212,848
Factor Arrows
26,424
Factor Arrows
23,212
Factor Arrows
21,606
Factor Arrows
2803
Factor Arrows
1173

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:

2, 11, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11 x 73 = 205,568

This can also be written as 28 x 111 x 731 = 205,568

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


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