Q: What are the prime factors of the number 57,171,456?

 A: 2, 3, 19, 653

Why are those the prime factors of the number 57,171,456?

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 57,171,456

57,171,456
Factor Arrows
228,585,728
Factor Arrows
214,292,864
Factor Arrows
27,146,432
Factor Arrows
23,573,216
Factor Arrows
21,786,608
Factor Arrows
2893,304
Factor Arrows
2446,652
Factor Arrows
2223,326
Factor Arrows
2111,663
Factor Arrows
337,221
Factor Arrows
312,407
Factor Arrows
19653

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, 19, 653

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 2 x 2 x 2 x 3 x 3 x 19 x 653 = 57,171,456

This can also be written as 29 x 32 x 191 x 6531 = 57,171,456

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


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