Q: What are the prime factors of the number 57,710,240?

 A: 2, 5, 7, 17, 433

Why are those the prime factors of the number 57,710,240?

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 57,710,240

57,710,240
Factor Arrows
228,855,120
Factor Arrows
214,427,560
Factor Arrows
27,213,780
Factor Arrows
23,606,890
Factor Arrows
21,803,445
Factor Arrows
5360,689
Factor Arrows
751,527
Factor Arrows
77,361
Factor Arrows
17433

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, 7, 17, 433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 7 x 17 x 433 = 57,710,240

This can also be written as 25 x 51 x 72 x 171 x 4331 = 57,710,240

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


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