Q: What are the prime factors of the number 256,550,448?

 A: 2, 3, 7, 11, 41, 1693

Why are those the prime factors of the number 256,550,448?

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 256,550,448

256,550,448
Factor Arrows
2128,275,224
Factor Arrows
264,137,612
Factor Arrows
232,068,806
Factor Arrows
216,034,403
Factor Arrows
35,344,801
Factor Arrows
7763,543
Factor Arrows
1169,413
Factor Arrows
411,693

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, 7, 11, 41, 1693

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 11 x 41 x 1,693 = 256,550,448

This can also be written as 24 x 31 x 71 x 111 x 411 x 1,6931 = 256,550,448

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


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