Q: What are the prime factors of the number 890,560?

 A: 2, 5, 11, 23

Why are those the prime factors of the number 890,560?

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 890,560

890,560
Factor Arrows
2445,280
Factor Arrows
2222,640
Factor Arrows
2111,320
Factor Arrows
255,660
Factor Arrows
227,830
Factor Arrows
213,915
Factor Arrows
52,783
Factor Arrows
11253
Factor Arrows
1123

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, 23

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 5 x 11 x 11 x 23 = 890,560

This can also be written as 26 x 51 x 112 x 231 = 890,560

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


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