Q: What are the prime factors of the number 312,501,500?

 A: 2, 5, 113, 5531

Why are those the prime factors of the number 312,501,500?

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 312,501,500

312,501,500
Factor Arrows
2156,250,750
Factor Arrows
278,125,375
Factor Arrows
515,625,075
Factor Arrows
53,125,015
Factor Arrows
5625,003
Factor Arrows
1135,531

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, 113, 5531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 113 x 5,531 = 312,501,500

This can also be written as 22 x 53 x 1131 x 5,5311 = 312,501,500

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


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