Q: What are the prime factors of the number 49,085,728?

 A: 2, 431, 3559

Why are those the prime factors of the number 49,085,728?

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 49,085,728

49,085,728
Factor Arrows
224,542,864
Factor Arrows
212,271,432
Factor Arrows
26,135,716
Factor Arrows
23,067,858
Factor Arrows
21,533,929
Factor Arrows
4313,559

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, 431, 3559

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 431 x 3,559 = 49,085,728

This can also be written as 25 x 4311 x 3,5591 = 49,085,728

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


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