Q: What are the prime factors of the number 312,112,200?

 A: 2, 3, 5, 643, 809

Why are those the prime factors of the number 312,112,200?

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 312,112,200

312,112,200
Factor Arrows
2156,056,100
Factor Arrows
278,028,050
Factor Arrows
239,014,025
Factor Arrows
313,004,675
Factor Arrows
52,600,935
Factor Arrows
5520,187
Factor Arrows
643809

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, 5, 643, 809

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 643 x 809 = 312,112,200

This can also be written as 23 x 31 x 52 x 6431 x 8091 = 312,112,200

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


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