Q: What are the prime factors of the number 15,272,960?

 A: 2, 5, 19, 157

Why are those the prime factors of the number 15,272,960?

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 15,272,960

15,272,960
Factor Arrows
27,636,480
Factor Arrows
23,818,240
Factor Arrows
21,909,120
Factor Arrows
2954,560
Factor Arrows
2477,280
Factor Arrows
2238,640
Factor Arrows
2119,320
Factor Arrows
259,660
Factor Arrows
229,830
Factor Arrows
214,915
Factor Arrows
52,983
Factor Arrows
19157

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, 5, 19, 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 5 x 19 x 157 = 15,272,960

This can also be written as 210 x 51 x 191 x 1571 = 15,272,960

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


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