Q: What are the prime factors of the number 656,245,727?

 A: 29, 31, 37, 109, 181

Why are those the prime factors of the number 656,245,727?

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 656,245,727

656,245,727
Factor Arrows
2922,629,163
Factor Arrows
31729,973
Factor Arrows
3719,729
Factor Arrows
109181

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:

29, 31, 37, 109, 181

We can check our work by multiplying all of the prime factors together: 29 x 31 x 37 x 109 x 181 = 656,245,727

This can also be written as 291 x 311 x 371 x 1091 x 1811 = 656,245,727

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


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