Q: What are the prime factors of the number 312,215,125?

 A: 5, 19, 47, 2797

Why are those the prime factors of the number 312,215,125?

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 312,215,125

312,215,125
Factor Arrows
562,443,025
Factor Arrows
512,488,605
Factor Arrows
52,497,721
Factor Arrows
19131,459
Factor Arrows
472,797

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:

5, 19, 47, 2797

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 19 x 47 x 2,797 = 312,215,125

This can also be written as 53 x 191 x 471 x 2,7971 = 312,215,125

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


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