Q: What are the prime factors of the number 51,028,480?

 A: 2, 5, 31, 643

Why are those the prime factors of the number 51,028,480?

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 51,028,480

51,028,480
Factor Arrows
225,514,240
Factor Arrows
212,757,120
Factor Arrows
26,378,560
Factor Arrows
23,189,280
Factor Arrows
21,594,640
Factor Arrows
2797,320
Factor Arrows
2398,660
Factor Arrows
2199,330
Factor Arrows
299,665
Factor Arrows
519,933
Factor Arrows
31643

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, 31, 643

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 31 x 643 = 51,028,480

This can also be written as 29 x 51 x 311 x 6431 = 51,028,480

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


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