Q: What are the prime factors of the number 57,260,720?

 A: 2, 5, 11, 31, 2099

Why are those the prime factors of the number 57,260,720?

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 57,260,720

57,260,720
Factor Arrows
228,630,360
Factor Arrows
214,315,180
Factor Arrows
27,157,590
Factor Arrows
23,578,795
Factor Arrows
5715,759
Factor Arrows
1165,069
Factor Arrows
312,099

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, 31, 2099

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 31 x 2,099 = 57,260,720

This can also be written as 24 x 51 x 111 x 311 x 2,0991 = 57,260,720

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


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