Q: What are the prime factors of the number 281,440?

 A: 2, 5, 1759

Why are those the prime factors of the number 281,440?

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 281,440

281,440
Factor Arrows
2140,720
Factor Arrows
270,360
Factor Arrows
235,180
Factor Arrows
217,590
Factor Arrows
28,795
Factor Arrows
51,759

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, 1759

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 1,759 = 281,440

This can also be written as 25 x 51 x 1,7591 = 281,440

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


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