Q: What are the prime factors of the number 57,901,830?

 A: 2, 3, 5, 7, 17, 331

Why are those the prime factors of the number 57,901,830?

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 57,901,830

57,901,830
Factor Arrows
228,950,915
Factor Arrows
39,650,305
Factor Arrows
51,930,061
Factor Arrows
7275,723
Factor Arrows
739,389
Factor Arrows
75,627
Factor Arrows
17331

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, 7, 17, 331

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 7 x 7 x 17 x 331 = 57,901,830

This can also be written as 21 x 31 x 51 x 73 x 171 x 3311 = 57,901,830

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


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