Q: What are the prime factors of the number 312,131,000?

 A: 2, 5, 457, 683

Why are those the prime factors of the number 312,131,000?

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 312,131,000

312,131,000
Factor Arrows
2156,065,500
Factor Arrows
278,032,750
Factor Arrows
239,016,375
Factor Arrows
57,803,275
Factor Arrows
51,560,655
Factor Arrows
5312,131
Factor Arrows
457683

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, 457, 683

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 457 x 683 = 312,131,000

This can also be written as 23 x 53 x 4571 x 6831 = 312,131,000

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


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