Q: What are the prime factors of the number 31,561,088?

 A: 2, 13, 1459

Why are those the prime factors of the number 31,561,088?

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 31,561,088

31,561,088
Factor Arrows
215,780,544
Factor Arrows
27,890,272
Factor Arrows
23,945,136
Factor Arrows
21,972,568
Factor Arrows
2986,284
Factor Arrows
2493,142
Factor Arrows
2246,571
Factor Arrows
1318,967
Factor Arrows
131,459

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, 13, 1459

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 13 x 13 x 1,459 = 31,561,088

This can also be written as 27 x 132 x 1,4591 = 31,561,088

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


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