Q: What are the prime factors of the number 328,158?

 A: 2, 3, 59, 103

Why are those the prime factors of the number 328,158?

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 328,158

328,158
Factor Arrows
2164,079
Factor Arrows
354,693
Factor Arrows
318,231
Factor Arrows
36,077
Factor Arrows
59103

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, 59, 103

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 59 x 103 = 328,158

This can also be written as 21 x 33 x 591 x 1031 = 328,158

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


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