Q: What are the prime factors of the number 2,131,312?

 A: 2, 31, 4297

Why are those the prime factors of the number 2,131,312?

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 2,131,312

2,131,312
Factor Arrows
21,065,656
Factor Arrows
2532,828
Factor Arrows
2266,414
Factor Arrows
2133,207
Factor Arrows
314,297

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, 31, 4297

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 31 x 4,297 = 2,131,312

This can also be written as 24 x 311 x 4,2971 = 2,131,312

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


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