Q: What are the prime factors of the number 1,519,168?

 A: 2, 7, 3391

Why are those the prime factors of the number 1,519,168?

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 1,519,168

1,519,168
Factor Arrows
2759,584
Factor Arrows
2379,792
Factor Arrows
2189,896
Factor Arrows
294,948
Factor Arrows
247,474
Factor Arrows
223,737
Factor Arrows
73,391

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, 7, 3391

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 7 x 3,391 = 1,519,168

This can also be written as 26 x 71 x 3,3911 = 1,519,168

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


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