Q: What are the prime factors of the number 553,021,568?

 A: 2, 11, 23, 17077

Why are those the prime factors of the number 553,021,568?

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 553,021,568

553,021,568
Factor Arrows
2276,510,784
Factor Arrows
2138,255,392
Factor Arrows
269,127,696
Factor Arrows
234,563,848
Factor Arrows
217,281,924
Factor Arrows
28,640,962
Factor Arrows
24,320,481
Factor Arrows
11392,771
Factor Arrows
2317,077

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, 11, 23, 17077

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11 x 23 x 17,077 = 553,021,568

This can also be written as 27 x 111 x 231 x 17,0771 = 553,021,568

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


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