Q: What are the prime factors of the number 450,560?

 A: 2, 5, 11

Why are those the prime factors of the number 450,560?

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 450,560

450,560
Factor Arrows
2225,280
Factor Arrows
2112,640
Factor Arrows
256,320
Factor Arrows
228,160
Factor Arrows
214,080
Factor Arrows
27,040
Factor Arrows
23,520
Factor Arrows
21,760
Factor Arrows
2880
Factor Arrows
2440
Factor Arrows
2220
Factor Arrows
2110
Factor Arrows
255
Factor Arrows
511

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, 5, 11

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 2 x 2 x 2 x 5 x 11 = 450,560

This can also be written as 213 x 51 x 111 = 450,560

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


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