Q: What are the prime factors of the number 330,880?

 A: 2, 5, 11, 47

Why are those the prime factors of the number 330,880?

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 330,880

330,880
Factor Arrows
2165,440
Factor Arrows
282,720
Factor Arrows
241,360
Factor Arrows
220,680
Factor Arrows
210,340
Factor Arrows
25,170
Factor Arrows
22,585
Factor Arrows
5517
Factor Arrows
1147

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, 11, 47

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 5 x 11 x 47 = 330,880

This can also be written as 27 x 51 x 111 x 471 = 330,880

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


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