Q: What are the prime factors of the number 311,003,200?

 A: 2, 5, 194377

Why are those the prime factors of the number 311,003,200?

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 311,003,200

311,003,200
Factor Arrows
2155,501,600
Factor Arrows
277,750,800
Factor Arrows
238,875,400
Factor Arrows
219,437,700
Factor Arrows
29,718,850
Factor Arrows
24,859,425
Factor Arrows
5971,885
Factor Arrows
5194,377

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, 5, 194377

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 5 x 5 x 194,377 = 311,003,200

This can also be written as 26 x 52 x 194,3771 = 311,003,200

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


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