Q: What are the prime factors of the number 631,101,328?

 A: 2, 11, 13, 101, 2731

Why are those the prime factors of the number 631,101,328?

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 631,101,328

631,101,328
Factor Arrows
2315,550,664
Factor Arrows
2157,775,332
Factor Arrows
278,887,666
Factor Arrows
239,443,833
Factor Arrows
113,585,803
Factor Arrows
13275,831
Factor Arrows
1012,731

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, 13, 101, 2731

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 13 x 101 x 2,731 = 631,101,328

This can also be written as 24 x 111 x 131 x 1011 x 2,7311 = 631,101,328

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


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