Q: What are the prime factors of the number 564,556,538?

 A: 2, 7, 13, 19, 83, 281

Why are those the prime factors of the number 564,556,538?

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 564,556,538

564,556,538
Factor Arrows
2282,278,269
Factor Arrows
740,325,467
Factor Arrows
75,760,781
Factor Arrows
13443,137
Factor Arrows
1923,323
Factor Arrows
83281

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, 13, 19, 83, 281

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 13 x 19 x 83 x 281 = 564,556,538

This can also be written as 21 x 72 x 131 x 191 x 831 x 2811 = 564,556,538

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


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