Q: What are the prime factors of the number 281,536?

 A: 2, 53, 83

Why are those the prime factors of the number 281,536?

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 281,536

281,536
Factor Arrows
2140,768
Factor Arrows
270,384
Factor Arrows
235,192
Factor Arrows
217,596
Factor Arrows
28,798
Factor Arrows
24,399
Factor Arrows
5383

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, 53, 83

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 53 x 83 = 281,536

This can also be written as 26 x 531 x 831 = 281,536

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


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