Q: What are the prime factors of the number 57,242,744?

 A: 2, 13, 19, 59, 491

Why are those the prime factors of the number 57,242,744?

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 57,242,744

57,242,744
Factor Arrows
228,621,372
Factor Arrows
214,310,686
Factor Arrows
27,155,343
Factor Arrows
13550,411
Factor Arrows
1928,969
Factor Arrows
59491

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, 13, 19, 59, 491

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 19 x 59 x 491 = 57,242,744

This can also be written as 23 x 131 x 191 x 591 x 4911 = 57,242,744

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


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