Q: What are the prime factors of the number 172,838,715?

 A: 3, 5, 7, 43, 38281

Why are those the prime factors of the number 172,838,715?

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 172,838,715

172,838,715
Factor Arrows
357,612,905
Factor Arrows
511,522,581
Factor Arrows
71,646,083
Factor Arrows
4338,281

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:

3, 5, 7, 43, 38281

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 43 x 38,281 = 172,838,715

This can also be written as 31 x 51 x 71 x 431 x 38,2811 = 172,838,715

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


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