Q: What are the prime factors of the number 345,805,184?

 A: 2, 23, 5107

Why are those the prime factors of the number 345,805,184?

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 345,805,184

345,805,184
Factor Arrows
2172,902,592
Factor Arrows
286,451,296
Factor Arrows
243,225,648
Factor Arrows
221,612,824
Factor Arrows
210,806,412
Factor Arrows
25,403,206
Factor Arrows
22,701,603
Factor Arrows
23117,461
Factor Arrows
235,107

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, 23, 5107

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 2 x 23 x 23 x 5,107 = 345,805,184

This can also be written as 27 x 232 x 5,1071 = 345,805,184

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


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