Q: What are the prime factors of the number 553,021,560?

 A: 2, 3, 5, 7, 13, 17, 331

Why are those the prime factors of the number 553,021,560?

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 553,021,560

553,021,560
Factor Arrows
2276,510,780
Factor Arrows
2138,255,390
Factor Arrows
269,127,695
Factor Arrows
323,042,565
Factor Arrows
37,680,855
Factor Arrows
32,560,285
Factor Arrows
5512,057
Factor Arrows
773,151
Factor Arrows
135,627
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, 13, 17, 331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 5 x 7 x 13 x 17 x 331 = 553,021,560

This can also be written as 23 x 33 x 51 x 71 x 131 x 171 x 3311 = 553,021,560

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


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