Q: What are the prime factors of the number 276,345?

 A: 3, 5, 23, 89

Why are those the prime factors of the number 276,345?

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 276,345

276,345
Factor Arrows
392,115
Factor Arrows
330,705
Factor Arrows
310,235
Factor Arrows
52,047
Factor Arrows
2389

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:

3, 5, 23, 89

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 23 x 89 = 276,345

This can also be written as 33 x 51 x 231 x 891 = 276,345

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


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