Q: What are the prime factors of the number 202,177,724?

 A: 2, 7, 41, 139, 181

Why are those the prime factors of the number 202,177,724?

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 202,177,724

202,177,724
Factor Arrows
2101,088,862
Factor Arrows
250,544,431
Factor Arrows
77,220,633
Factor Arrows
71,031,519
Factor Arrows
4125,159
Factor Arrows
139181

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, 7, 41, 139, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 41 x 139 x 181 = 202,177,724

This can also be written as 22 x 72 x 411 x 1391 x 1811 = 202,177,724

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


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