Q: What are the prime factors of the number 35,880?

 A: 2, 3, 5, 13, 23

Why are those the prime factors of the number 35,880?

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 35,880

35,880
Factor Arrows
217,940
Factor Arrows
28,970
Factor Arrows
24,485
Factor Arrows
31,495
Factor Arrows
5299
Factor Arrows
1323

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, 3, 5, 13, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 13 x 23 = 35,880

This can also be written as 23 x 31 x 51 x 131 x 231 = 35,880

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


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