Q: What are the prime factors of the number 210,345,665?

 A: 5, 71, 479, 1237

Why are those the prime factors of the number 210,345,665?

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 210,345,665

210,345,665
Factor Arrows
542,069,133
Factor Arrows
71592,523
Factor Arrows
4791,237

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:

5, 71, 479, 1237

We can check our work by multiplying all of the prime factors together: 5 x 71 x 479 x 1,237 = 210,345,665

This can also be written as 51 x 711 x 4791 x 1,2371 = 210,345,665

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


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