Q: What are the prime factors of the number 31,660,460?

 A: 2, 5, 13, 17, 19, 29

Why are those the prime factors of the number 31,660,460?

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 31,660,460

31,660,460
Factor Arrows
215,830,230
Factor Arrows
27,915,115
Factor Arrows
51,583,023
Factor Arrows
13121,771
Factor Arrows
139,367
Factor Arrows
17551
Factor Arrows
1929

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, 5, 13, 17, 19, 29

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 13 x 17 x 19 x 29 = 31,660,460

This can also be written as 22 x 51 x 132 x 171 x 191 x 291 = 31,660,460

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


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