Q: What are the prime factors of the number 15,585,444?

 A: 2, 3, 7, 23, 2689

Why are those the prime factors of the number 15,585,444?

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 15,585,444

15,585,444
Factor Arrows
27,792,722
Factor Arrows
23,896,361
Factor Arrows
31,298,787
Factor Arrows
3432,929
Factor Arrows
761,847
Factor Arrows
232,689

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, 23, 2689

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 23 x 2,689 = 15,585,444

This can also be written as 22 x 32 x 71 x 231 x 2,6891 = 15,585,444

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


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