Q: What are the prime factors of the number 251,352,768?

 A: 2, 3, 1309129

Why are those the prime factors of the number 251,352,768?

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 251,352,768

251,352,768
Factor Arrows
2125,676,384
Factor Arrows
262,838,192
Factor Arrows
231,419,096
Factor Arrows
215,709,548
Factor Arrows
27,854,774
Factor Arrows
23,927,387
Factor Arrows
31,309,129

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, 1309129

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 3 x 1,309,129 = 251,352,768

This can also be written as 26 x 31 x 1,309,1291 = 251,352,768

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


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