Q: What are the prime factors of the number 250,517,760?

 A: 2, 3, 5, 65239

Why are those the prime factors of the number 250,517,760?

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 250,517,760

250,517,760
Factor Arrows
2125,258,880
Factor Arrows
262,629,440
Factor Arrows
231,314,720
Factor Arrows
215,657,360
Factor Arrows
27,828,680
Factor Arrows
23,914,340
Factor Arrows
21,957,170
Factor Arrows
2978,585
Factor Arrows
3326,195
Factor Arrows
565,239

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, 5, 65239

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 3 x 5 x 65,239 = 250,517,760

This can also be written as 28 x 31 x 51 x 65,2391 = 250,517,760

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


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