Q: What are the prime factors of the number 204,365,616?

 A: 2, 3, 7, 13, 59, 61

Why are those the prime factors of the number 204,365,616?

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 204,365,616

204,365,616
Factor Arrows
2102,182,808
Factor Arrows
251,091,404
Factor Arrows
225,545,702
Factor Arrows
212,772,851
Factor Arrows
34,257,617
Factor Arrows
7608,231
Factor Arrows
1346,787
Factor Arrows
133,599
Factor Arrows
5961

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, 59, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 13 x 13 x 59 x 61 = 204,365,616

This can also be written as 24 x 31 x 71 x 132 x 591 x 611 = 204,365,616

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


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