Q: What are the prime factors of the number 3,162,528?

 A: 2, 3, 79, 139

Why are those the prime factors of the number 3,162,528?

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 3,162,528

3,162,528
Factor Arrows
21,581,264
Factor Arrows
2790,632
Factor Arrows
2395,316
Factor Arrows
2197,658
Factor Arrows
298,829
Factor Arrows
332,943
Factor Arrows
310,981
Factor Arrows
79139

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, 79, 139

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 79 x 139 = 3,162,528

This can also be written as 25 x 32 x 791 x 1391 = 3,162,528

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


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