Q: What are the prime factors of the number 4,571,776?

 A: 2, 11, 17, 191

Why are those the prime factors of the number 4,571,776?

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 4,571,776

4,571,776
Factor Arrows
22,285,888
Factor Arrows
21,142,944
Factor Arrows
2571,472
Factor Arrows
2285,736
Factor Arrows
2142,868
Factor Arrows
271,434
Factor Arrows
235,717
Factor Arrows
113,247
Factor Arrows
17191

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, 11, 17, 191

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 11 x 17 x 191 = 4,571,776

This can also be written as 27 x 111 x 171 x 1911 = 4,571,776

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


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