Q: What are the prime factors of the number 7,128,528?

 A: 2, 3, 11, 23, 587

Why are those the prime factors of the number 7,128,528?

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 7,128,528

7,128,528
Factor Arrows
23,564,264
Factor Arrows
21,782,132
Factor Arrows
2891,066
Factor Arrows
2445,533
Factor Arrows
3148,511
Factor Arrows
1113,501
Factor Arrows
23587

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, 11, 23, 587

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 23 x 587 = 7,128,528

This can also be written as 24 x 31 x 111 x 231 x 5871 = 7,128,528

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


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