Q: What are the prime factors of the number 32,160,768?

 A: 2, 3, 19, 29

Why are those the prime factors of the number 32,160,768?

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 32,160,768

32,160,768
Factor Arrows
216,080,384
Factor Arrows
28,040,192
Factor Arrows
24,020,096
Factor Arrows
22,010,048
Factor Arrows
21,005,024
Factor Arrows
2502,512
Factor Arrows
2251,256
Factor Arrows
2125,628
Factor Arrows
262,814
Factor Arrows
231,407
Factor Arrows
310,469
Factor Arrows
19551
Factor Arrows
1929

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, 19, 29

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 3 x 19 x 19 x 29 = 32,160,768

This can also be written as 210 x 31 x 192 x 291 = 32,160,768

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


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