Q: What are the prime factors of the number 5,179,776?

 A: 2, 3, 7, 41, 47

Why are those the prime factors of the number 5,179,776?

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 5,179,776

5,179,776
Factor Arrows
22,589,888
Factor Arrows
21,294,944
Factor Arrows
2647,472
Factor Arrows
2323,736
Factor Arrows
2161,868
Factor Arrows
280,934
Factor Arrows
240,467
Factor Arrows
313,489
Factor Arrows
71,927
Factor Arrows
4147

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, 7, 41, 47

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 3 x 7 x 41 x 47 = 5,179,776

This can also be written as 27 x 31 x 71 x 411 x 471 = 5,179,776

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


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