Q: What are the prime factors of the number 31,655,008?

 A: 2, 7, 11, 29, 443

Why are those the prime factors of the number 31,655,008?

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 31,655,008

31,655,008
Factor Arrows
215,827,504
Factor Arrows
27,913,752
Factor Arrows
23,956,876
Factor Arrows
21,978,438
Factor Arrows
2989,219
Factor Arrows
7141,317
Factor Arrows
1112,847
Factor Arrows
29443

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, 11, 29, 443

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 29 x 443 = 31,655,008

This can also be written as 25 x 71 x 111 x 291 x 4431 = 31,655,008

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


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