Q: What are the prime factors of the number 2,872,436?

 A: 2, 7, 102587

Why are those the prime factors of the number 2,872,436?

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 2,872,436

2,872,436
Factor Arrows
21,436,218
Factor Arrows
2718,109
Factor Arrows
7102,587

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, 7, 102587

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 102,587 = 2,872,436

This can also be written as 22 x 71 x 102,5871 = 2,872,436

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


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