Q: What are the prime factors of the number 211,111,012?

 A: 2, 7, 153871

Why are those the prime factors of the number 211,111,012?

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 211,111,012

211,111,012
Factor Arrows
2105,555,506
Factor Arrows
252,777,753
Factor Arrows
77,539,679
Factor Arrows
71,077,097
Factor Arrows
7153,871

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, 153871

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 7 x 153,871 = 211,111,012

This can also be written as 22 x 73 x 153,8711 = 211,111,012

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


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