Q: What are the prime factors of the number 5,123,646?

 A: 2, 3, 11, 113, 229

Why are those the prime factors of the number 5,123,646?

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 5,123,646

5,123,646
Factor Arrows
22,561,823
Factor Arrows
3853,941
Factor Arrows
3284,647
Factor Arrows
1125,877
Factor Arrows
113229

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, 113, 229

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 113 x 229 = 5,123,646

This can also be written as 21 x 32 x 111 x 1131 x 2291 = 5,123,646

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


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