Q: What are the prime factors of the number 305,388,576?

 A: 2, 3, 353459

Why are those the prime factors of the number 305,388,576?

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 305,388,576

305,388,576
Factor Arrows
2152,694,288
Factor Arrows
276,347,144
Factor Arrows
238,173,572
Factor Arrows
219,086,786
Factor Arrows
29,543,393
Factor Arrows
33,181,131
Factor Arrows
31,060,377
Factor Arrows
3353,459

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, 353459

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 353,459 = 305,388,576

This can also be written as 25 x 33 x 353,4591 = 305,388,576

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


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