Q: What are the prime factors of the number 354,942?

 A: 2, 3, 7, 313

Why are those the prime factors of the number 354,942?

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 354,942

354,942
Factor Arrows
2177,471
Factor Arrows
359,157
Factor Arrows
319,719
Factor Arrows
36,573
Factor Arrows
32,191
Factor Arrows
7313

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, 313

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 7 x 313 = 354,942

This can also be written as 21 x 34 x 71 x 3131 = 354,942

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


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