Q: What are the prime factors of the number 647,652,170?

 A: 2, 5, 11, 23, 255989

Why are those the prime factors of the number 647,652,170?

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 647,652,170

647,652,170
Factor Arrows
2323,826,085
Factor Arrows
564,765,217
Factor Arrows
115,887,747
Factor Arrows
23255,989

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, 5, 11, 23, 255989

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 23 x 255,989 = 647,652,170

This can also be written as 21 x 51 x 111 x 231 x 255,9891 = 647,652,170

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


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