Q: What are the prime factors of the number 660,555,553?

 A: 7, 17, 1697, 3271

Why are those the prime factors of the number 660,555,553?

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 660,555,553

660,555,553
Factor Arrows
794,365,079
Factor Arrows
175,550,887
Factor Arrows
1,6973,271

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:

7, 17, 1697, 3271

We can check our work by multiplying all of the prime factors together: 7 x 17 x 1,697 x 3,271 = 660,555,553

This can also be written as 71 x 171 x 1,6971 x 3,2711 = 660,555,553

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


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