Q: What are the prime factors of the number 1,463,168?

 A: 2, 7, 23, 71

Why are those the prime factors of the number 1,463,168?

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 1,463,168

1,463,168
Factor Arrows
2731,584
Factor Arrows
2365,792
Factor Arrows
2182,896
Factor Arrows
291,448
Factor Arrows
245,724
Factor Arrows
222,862
Factor Arrows
211,431
Factor Arrows
71,633
Factor Arrows
2371

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, 23, 71

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 7 x 23 x 71 = 1,463,168

This can also be written as 27 x 71 x 231 x 711 = 1,463,168

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


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