Q: What are the prime factors of the number 31,264,730?

 A: 2, 5, 7, 367, 1217

Why are those the prime factors of the number 31,264,730?

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 31,264,730

31,264,730
Factor Arrows
215,632,365
Factor Arrows
53,126,473
Factor Arrows
7446,639
Factor Arrows
3671,217

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, 7, 367, 1217

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 367 x 1,217 = 31,264,730

This can also be written as 21 x 51 x 71 x 3671 x 1,2171 = 31,264,730

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


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