Q: What are the prime factors of the number 160,768?

 A: 2, 157

Why are those the prime factors of the number 160,768?

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 160,768

160,768
Factor Arrows
280,384
Factor Arrows
240,192
Factor Arrows
220,096
Factor Arrows
210,048
Factor Arrows
25,024
Factor Arrows
22,512
Factor Arrows
21,256
Factor Arrows
2628
Factor Arrows
2314
Factor Arrows
2157

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, 157

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 2 x 2 x 157 = 160,768

This can also be written as 210 x 1571 = 160,768

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


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