Q: What are the prime factors of the number 647,667,734?

 A: 2, 7, 17, 41, 66373

Why are those the prime factors of the number 647,667,734?

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 647,667,734

647,667,734
Factor Arrows
2323,833,867
Factor Arrows
746,261,981
Factor Arrows
172,721,293
Factor Arrows
4166,373

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, 17, 41, 66373

We can check our work by multiplying all of the prime factors together: 2 x 7 x 17 x 41 x 66,373 = 647,667,734

This can also be written as 21 x 71 x 171 x 411 x 66,3731 = 647,667,734

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


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