Q: What are the prime factors of the number 280,028?

 A: 2, 7, 73, 137

Why are those the prime factors of the number 280,028?

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 280,028

280,028
Factor Arrows
2140,014
Factor Arrows
270,007
Factor Arrows
710,001
Factor Arrows
73137

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, 7, 73, 137

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 73 x 137 = 280,028

This can also be written as 22 x 71 x 731 x 1371 = 280,028

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


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