Q: What are the prime factors of the number 305,706,560?

 A: 2, 5, 955333

Why are those the prime factors of the number 305,706,560?

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 305,706,560

305,706,560
Factor Arrows
2152,853,280
Factor Arrows
276,426,640
Factor Arrows
238,213,320
Factor Arrows
219,106,660
Factor Arrows
29,553,330
Factor Arrows
24,776,665
Factor Arrows
5955,333

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, 955333

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 955,333 = 305,706,560

This can also be written as 26 x 51 x 955,3331 = 305,706,560

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


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