Q: What are the prime factors of the number 315,110,625?

 A: 3, 5, 41, 4099

Why are those the prime factors of the number 315,110,625?

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 315,110,625

315,110,625
Factor Arrows
3105,036,875
Factor Arrows
521,007,375
Factor Arrows
54,201,475
Factor Arrows
5840,295
Factor Arrows
5168,059
Factor Arrows
414,099

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:

3, 5, 41, 4099

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 5 x 41 x 4,099 = 315,110,625

This can also be written as 31 x 54 x 411 x 4,0991 = 315,110,625

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


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