Q: What are the prime factors of the number 303,940?

 A: 2, 5, 7, 13, 167

Why are those the prime factors of the number 303,940?

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 303,940

303,940
Factor Arrows
2151,970
Factor Arrows
275,985
Factor Arrows
515,197
Factor Arrows
72,171
Factor Arrows
13167

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, 5, 7, 13, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 13 x 167 = 303,940

This can also be written as 22 x 51 x 71 x 131 x 1671 = 303,940

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


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