Q: What are the prime factors of the number 31,590,576?

 A: 2, 3, 431, 509

Why are those the prime factors of the number 31,590,576?

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 31,590,576

31,590,576
Factor Arrows
215,795,288
Factor Arrows
27,897,644
Factor Arrows
23,948,822
Factor Arrows
21,974,411
Factor Arrows
3658,137
Factor Arrows
3219,379
Factor Arrows
431509

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, 3, 431, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 431 x 509 = 31,590,576

This can also be written as 24 x 32 x 4311 x 5091 = 31,590,576

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


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