Q: What are the prime factors of the number 18,004,480?

 A: 2, 5, 13, 541

Why are those the prime factors of the number 18,004,480?

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 18,004,480

18,004,480
Factor Arrows
29,002,240
Factor Arrows
24,501,120
Factor Arrows
22,250,560
Factor Arrows
21,125,280
Factor Arrows
2562,640
Factor Arrows
2281,320
Factor Arrows
2140,660
Factor Arrows
270,330
Factor Arrows
235,165
Factor Arrows
57,033
Factor Arrows
13541

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, 13, 541

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 5 x 13 x 541 = 18,004,480

This can also be written as 29 x 51 x 131 x 5411 = 18,004,480

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


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