Q: What are the prime factors of the number 6,446,144?

 A: 2, 47, 2143

Why are those the prime factors of the number 6,446,144?

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 6,446,144

6,446,144
Factor Arrows
23,223,072
Factor Arrows
21,611,536
Factor Arrows
2805,768
Factor Arrows
2402,884
Factor Arrows
2201,442
Factor Arrows
2100,721
Factor Arrows
472,143

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, 47, 2143

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 47 x 2,143 = 6,446,144

This can also be written as 26 x 471 x 2,1431 = 6,446,144

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


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