Q: What are the prime factors of the number 3,451,776?

 A: 2, 3, 89, 101

Why are those the prime factors of the number 3,451,776?

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 3,451,776

3,451,776
Factor Arrows
21,725,888
Factor Arrows
2862,944
Factor Arrows
2431,472
Factor Arrows
2215,736
Factor Arrows
2107,868
Factor Arrows
253,934
Factor Arrows
226,967
Factor Arrows
38,989
Factor Arrows
89101

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, 89, 101

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 89 x 101 = 3,451,776

This can also be written as 27 x 31 x 891 x 1011 = 3,451,776

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


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