Q: What are the prime factors of the number 1,516,416?

 A: 2, 3, 11, 359

Why are those the prime factors of the number 1,516,416?

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 1,516,416

1,516,416
Factor Arrows
2758,208
Factor Arrows
2379,104
Factor Arrows
2189,552
Factor Arrows
294,776
Factor Arrows
247,388
Factor Arrows
223,694
Factor Arrows
211,847
Factor Arrows
33,949
Factor Arrows
11359

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, 359

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 11 x 359 = 1,516,416

This can also be written as 27 x 31 x 111 x 3591 = 1,516,416

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


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