Q: What are the prime factors of the number 172,706,304?

 A: 2, 3, 229, 491

Why are those the prime factors of the number 172,706,304?

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 172,706,304

172,706,304
Factor Arrows
286,353,152
Factor Arrows
243,176,576
Factor Arrows
221,588,288
Factor Arrows
210,794,144
Factor Arrows
25,397,072
Factor Arrows
22,698,536
Factor Arrows
21,349,268
Factor Arrows
2674,634
Factor Arrows
2337,317
Factor Arrows
3112,439
Factor Arrows
229491

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, 229, 491

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 2 x 2 x 3 x 229 x 491 = 172,706,304

This can also be written as 29 x 31 x 2291 x 4911 = 172,706,304

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


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