Q: What are the prime factors of the number 303,321,330?

 A: 2, 3, 5, 13, 131, 1979

Why are those the prime factors of the number 303,321,330?

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 303,321,330

303,321,330
Factor Arrows
2151,660,665
Factor Arrows
350,553,555
Factor Arrows
316,851,185
Factor Arrows
53,370,237
Factor Arrows
13259,249
Factor Arrows
1311,979

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, 5, 13, 131, 1979

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 13 x 131 x 1,979 = 303,321,330

This can also be written as 21 x 32 x 51 x 131 x 1311 x 1,9791 = 303,321,330

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


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