Q: What are the prime factors of the number 305,214?

 A: 2, 3, 7, 13, 43

Why are those the prime factors of the number 305,214?

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 305,214

305,214
Factor Arrows
2152,607
Factor Arrows
350,869
Factor Arrows
77,267
Factor Arrows
13559
Factor Arrows
1343

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, 43

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 13 x 13 x 43 = 305,214

This can also be written as 21 x 31 x 71 x 132 x 431 = 305,214

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


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