Q: What are the prime factors of the number 509,278?

 A: 2, 7, 11, 3307

Why are those the prime factors of the number 509,278?

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 509,278

509,278
Factor Arrows
2254,639
Factor Arrows
736,377
Factor Arrows
113,307

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, 11, 3307

We can check our work by multiplying all of the prime factors together: 2 x 7 x 11 x 3,307 = 509,278

This can also be written as 21 x 71 x 111 x 3,3071 = 509,278

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


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