Q: What are the prime factors of the number 43,881,376?

 A: 2, 7, 11, 1619

Why are those the prime factors of the number 43,881,376?

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 43,881,376

43,881,376
Factor Arrows
221,940,688
Factor Arrows
210,970,344
Factor Arrows
25,485,172
Factor Arrows
22,742,586
Factor Arrows
21,371,293
Factor Arrows
7195,899
Factor Arrows
1117,809
Factor Arrows
111,619

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, 11, 1619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 11 x 1,619 = 43,881,376

This can also be written as 25 x 71 x 112 x 1,6191 = 43,881,376

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


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