Q: What are the prime factors of the number 57,122,340?

 A: 2, 3, 5, 11, 23, 53, 71

Why are those the prime factors of the number 57,122,340?

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 57,122,340

57,122,340
Factor Arrows
228,561,170
Factor Arrows
214,280,585
Factor Arrows
34,760,195
Factor Arrows
5952,039
Factor Arrows
1186,549
Factor Arrows
233,763
Factor Arrows
5371

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, 3, 5, 11, 23, 53, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 23 x 53 x 71 = 57,122,340

This can also be written as 22 x 31 x 51 x 111 x 231 x 531 x 711 = 57,122,340

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


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