Q: What are the prime factors of the number 142,222,311?

 A: 3, 7, 11, 691

Why are those the prime factors of the number 142,222,311?

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 142,222,311

142,222,311
Factor Arrows
347,407,437
Factor Arrows
315,802,479
Factor Arrows
35,267,493
Factor Arrows
31,755,831
Factor Arrows
3585,277
Factor Arrows
783,611
Factor Arrows
117,601
Factor Arrows
11691

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, 7, 11, 691

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 7 x 11 x 11 x 691 = 142,222,311

This can also be written as 35 x 71 x 112 x 6911 = 142,222,311

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


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