Q: What are the prime factors of the number 42,871,744?

 A: 2, 29, 23099

Why are those the prime factors of the number 42,871,744?

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 42,871,744

42,871,744
Factor Arrows
221,435,872
Factor Arrows
210,717,936
Factor Arrows
25,358,968
Factor Arrows
22,679,484
Factor Arrows
21,339,742
Factor Arrows
2669,871
Factor Arrows
2923,099

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, 29, 23099

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 29 x 23,099 = 42,871,744

This can also be written as 26 x 291 x 23,0991 = 42,871,744

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


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