Q: What are the prime factors of the number 3,316,960?

 A: 2, 5, 20731

Why are those the prime factors of the number 3,316,960?

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 3,316,960

3,316,960
Factor Arrows
21,658,480
Factor Arrows
2829,240
Factor Arrows
2414,620
Factor Arrows
2207,310
Factor Arrows
2103,655
Factor Arrows
520,731

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, 20731

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 20,731 = 3,316,960

This can also be written as 25 x 51 x 20,7311 = 3,316,960

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


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