Q: What are the prime factors of the number 262,990?

 A: 2, 5, 7, 13, 17

Why are those the prime factors of the number 262,990?

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 262,990

262,990
Factor Arrows
2131,495
Factor Arrows
526,299
Factor Arrows
73,757
Factor Arrows
13289
Factor Arrows
1717

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, 7, 13, 17

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 13 x 17 x 17 = 262,990

This can also be written as 21 x 51 x 71 x 131 x 172 = 262,990

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


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