Q: What are the prime factors of the number 3,438,272?

 A: 2, 31, 1733

Why are those the prime factors of the number 3,438,272?

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 3,438,272

3,438,272
Factor Arrows
21,719,136
Factor Arrows
2859,568
Factor Arrows
2429,784
Factor Arrows
2214,892
Factor Arrows
2107,446
Factor Arrows
253,723
Factor Arrows
311,733

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, 31, 1733

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 31 x 1,733 = 3,438,272

This can also be written as 26 x 311 x 1,7331 = 3,438,272

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


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