Q: What are the prime factors of the number 201,780,768?

 A: 2, 3, 7, 43, 6983

Why are those the prime factors of the number 201,780,768?

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 201,780,768

201,780,768
Factor Arrows
2100,890,384
Factor Arrows
250,445,192
Factor Arrows
225,222,596
Factor Arrows
212,611,298
Factor Arrows
26,305,649
Factor Arrows
32,101,883
Factor Arrows
7300,269
Factor Arrows
436,983

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, 43, 6983

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 43 x 6,983 = 201,780,768

This can also be written as 25 x 31 x 71 x 431 x 6,9831 = 201,780,768

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


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