Q: What are the prime factors of the number 212,871,942?

 A: 2, 3, 73, 54001

Why are those the prime factors of the number 212,871,942?

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 212,871,942

212,871,942
Factor Arrows
2106,435,971
Factor Arrows
335,478,657
Factor Arrows
311,826,219
Factor Arrows
33,942,073
Factor Arrows
7354,001

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, 73, 54001

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 73 x 54,001 = 212,871,942

This can also be written as 21 x 33 x 731 x 54,0011 = 212,871,942

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


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