Q: What are the prime factors of the number 315,464?

 A: 2, 47, 839

Why are those the prime factors of the number 315,464?

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 315,464

315,464
Factor Arrows
2157,732
Factor Arrows
278,866
Factor Arrows
239,433
Factor Arrows
47839

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, 47, 839

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 47 x 839 = 315,464

This can also be written as 23 x 471 x 8391 = 315,464

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


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