Q: What are the prime factors of the number 273,942?

 A: 2, 3, 19, 89

Why are those the prime factors of the number 273,942?

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 273,942

273,942
Factor Arrows
2136,971
Factor Arrows
345,657
Factor Arrows
315,219
Factor Arrows
35,073
Factor Arrows
31,691
Factor Arrows
1989

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, 19, 89

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 19 x 89 = 273,942

This can also be written as 21 x 34 x 191 x 891 = 273,942

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


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