Q: What are the prime factors of the number 342,180,500?

 A: 2, 5, 19, 181, 199

Why are those the prime factors of the number 342,180,500?

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 342,180,500

342,180,500
Factor Arrows
2171,090,250
Factor Arrows
285,545,125
Factor Arrows
517,109,025
Factor Arrows
53,421,805
Factor Arrows
5684,361
Factor Arrows
1936,019
Factor Arrows
181199

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, 19, 181, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 19 x 181 x 199 = 342,180,500

This can also be written as 22 x 53 x 191 x 1811 x 1991 = 342,180,500

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


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