Q: What are the prime factors of the number 1,512,448?

 A: 2, 7, 211

Why are those the prime factors of the number 1,512,448?

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 1,512,448

1,512,448
Factor Arrows
2756,224
Factor Arrows
2378,112
Factor Arrows
2189,056
Factor Arrows
294,528
Factor Arrows
247,264
Factor Arrows
223,632
Factor Arrows
211,816
Factor Arrows
25,908
Factor Arrows
22,954
Factor Arrows
21,477
Factor Arrows
7211

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, 211

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 2 x 2 x 2 x 7 x 211 = 1,512,448

This can also be written as 210 x 71 x 2111 = 1,512,448

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


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