Q: What are the prime factors of the number 57,421,760?

 A: 2, 5, 11, 1483

Why are those the prime factors of the number 57,421,760?

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 57,421,760

57,421,760
Factor Arrows
228,710,880
Factor Arrows
214,355,440
Factor Arrows
27,177,720
Factor Arrows
23,588,860
Factor Arrows
21,794,430
Factor Arrows
2897,215
Factor Arrows
5179,443
Factor Arrows
1116,313
Factor Arrows
111,483

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, 1483

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 5 x 11 x 11 x 1,483 = 57,421,760

This can also be written as 26 x 51 x 112 x 1,4831 = 57,421,760

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


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