Q: What are the prime factors of the number 205,758?

 A: 2, 3, 7, 23, 71

Why are those the prime factors of the number 205,758?

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 205,758

205,758
Factor Arrows
2102,879
Factor Arrows
334,293
Factor Arrows
311,431
Factor Arrows
71,633
Factor Arrows
2371

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, 3, 7, 23, 71

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 23 x 71 = 205,758

This can also be written as 21 x 32 x 71 x 231 x 711 = 205,758

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


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