Q: What are the prime factors of the number 15,531,552?

 A: 2, 3, 199, 271

Why are those the prime factors of the number 15,531,552?

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 15,531,552

15,531,552
Factor Arrows
27,765,776
Factor Arrows
23,882,888
Factor Arrows
21,941,444
Factor Arrows
2970,722
Factor Arrows
2485,361
Factor Arrows
3161,787
Factor Arrows
353,929
Factor Arrows
199271

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, 199, 271

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 3 x 199 x 271 = 15,531,552

This can also be written as 25 x 32 x 1991 x 2711 = 15,531,552

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


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