Q: What are the prime factors of the number 343,278?

 A: 2, 3, 13, 163

Why are those the prime factors of the number 343,278?

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 343,278

343,278
Factor Arrows
2171,639
Factor Arrows
357,213
Factor Arrows
319,071
Factor Arrows
36,357
Factor Arrows
32,119
Factor Arrows
13163

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, 3, 13, 163

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 13 x 163 = 343,278

This can also be written as 21 x 34 x 131 x 1631 = 343,278

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


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