Q: What are the prime factors of the number 172,443,744?

 A: 2, 3, 11, 29, 1877

Why are those the prime factors of the number 172,443,744?

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 172,443,744

172,443,744
Factor Arrows
286,221,872
Factor Arrows
243,110,936
Factor Arrows
221,555,468
Factor Arrows
210,777,734
Factor Arrows
25,388,867
Factor Arrows
31,796,289
Factor Arrows
3598,763
Factor Arrows
1154,433
Factor Arrows
291,877

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, 11, 29, 1877

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 29 x 1,877 = 172,443,744

This can also be written as 25 x 32 x 111 x 291 x 1,8771 = 172,443,744

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


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