Q: What are the prime factors of the number 299,780?

 A: 2, 5, 13, 1153

Why are those the prime factors of the number 299,780?

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 299,780

299,780
Factor Arrows
2149,890
Factor Arrows
274,945
Factor Arrows
514,989
Factor Arrows
131,153

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, 13, 1153

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 1,153 = 299,780

This can also be written as 22 x 51 x 131 x 1,1531 = 299,780

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


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