Q: What are the prime factors of the number 286,880?

 A: 2, 5, 11, 163

Why are those the prime factors of the number 286,880?

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 286,880

286,880
Factor Arrows
2143,440
Factor Arrows
271,720
Factor Arrows
235,860
Factor Arrows
217,930
Factor Arrows
28,965
Factor Arrows
51,793
Factor Arrows
11163

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, 163

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 11 x 163 = 286,880

This can also be written as 25 x 51 x 111 x 1631 = 286,880

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


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