Q: What are the prime factors of the number 3,831,808?

 A: 2, 1871

Why are those the prime factors of the number 3,831,808?

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 3,831,808

3,831,808
Factor Arrows
21,915,904
Factor Arrows
2957,952
Factor Arrows
2478,976
Factor Arrows
2239,488
Factor Arrows
2119,744
Factor Arrows
259,872
Factor Arrows
229,936
Factor Arrows
214,968
Factor Arrows
27,484
Factor Arrows
23,742
Factor Arrows
21,871

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, 1871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 1,871 = 3,831,808

This can also be written as 211 x 1,8711 = 3,831,808

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


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