Q: What are the prime factors of the number 340,158?

 A: 2, 3, 7, 13, 89

Why are those the prime factors of the number 340,158?

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 340,158

340,158
Factor Arrows
2170,079
Factor Arrows
356,693
Factor Arrows
78,099
Factor Arrows
71,157
Factor Arrows
1389

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, 7, 13, 89

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 7 x 13 x 89 = 340,158

This can also be written as 21 x 31 x 72 x 131 x 891 = 340,158

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


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