Q: What are the prime factors of the number 1,215,168?

 A: 2, 3, 6329

Why are those the prime factors of the number 1,215,168?

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 1,215,168

1,215,168
Factor Arrows
2607,584
Factor Arrows
2303,792
Factor Arrows
2151,896
Factor Arrows
275,948
Factor Arrows
237,974
Factor Arrows
218,987
Factor Arrows
36,329

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, 6329

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 3 x 6,329 = 1,215,168

This can also be written as 26 x 31 x 6,3291 = 1,215,168

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


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