Q: What are the prime factors of the number 43,211,745?

 A: 3, 5, 37, 41, 211

Why are those the prime factors of the number 43,211,745?

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 43,211,745

43,211,745
Factor Arrows
314,403,915
Factor Arrows
34,801,305
Factor Arrows
31,600,435
Factor Arrows
5320,087
Factor Arrows
378,651
Factor Arrows
41211

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, 37, 41, 211

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 37 x 41 x 211 = 43,211,745

This can also be written as 33 x 51 x 371 x 411 x 2111 = 43,211,745

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


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