Q: What are the prime factors of the number 557,777,528?

 A: 2, 7, 11, 19, 47657

Why are those the prime factors of the number 557,777,528?

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 557,777,528

557,777,528
Factor Arrows
2278,888,764
Factor Arrows
2139,444,382
Factor Arrows
269,722,191
Factor Arrows
79,960,313
Factor Arrows
11905,483
Factor Arrows
1947,657

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, 7, 11, 19, 47657

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 19 x 47,657 = 557,777,528

This can also be written as 23 x 71 x 111 x 191 x 47,6571 = 557,777,528

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


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