Q: What are the prime factors of the number 311,202,144?

 A: 2, 3, 11, 23, 4271

Why are those the prime factors of the number 311,202,144?

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 311,202,144

311,202,144
Factor Arrows
2155,601,072
Factor Arrows
277,800,536
Factor Arrows
238,900,268
Factor Arrows
219,450,134
Factor Arrows
29,725,067
Factor Arrows
33,241,689
Factor Arrows
31,080,563
Factor Arrows
1198,233
Factor Arrows
234,271

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, 11, 23, 4271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 23 x 4,271 = 311,202,144

This can also be written as 25 x 32 x 111 x 231 x 4,2711 = 311,202,144

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


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