Q: What are the prime factors of the number 305,513,800?

 A: 2, 5, 17, 59, 1523

Why are those the prime factors of the number 305,513,800?

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 305,513,800

305,513,800
Factor Arrows
2152,756,900
Factor Arrows
276,378,450
Factor Arrows
238,189,225
Factor Arrows
57,637,845
Factor Arrows
51,527,569
Factor Arrows
1789,857
Factor Arrows
591,523

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, 17, 59, 1523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 17 x 59 x 1,523 = 305,513,800

This can also be written as 23 x 52 x 171 x 591 x 1,5231 = 305,513,800

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


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