Q: What are the prime factors of the number 456,631,209?

 A: 3, 31, 317, 1721

Why are those the prime factors of the number 456,631,209?

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 456,631,209

456,631,209
Factor Arrows
3152,210,403
Factor Arrows
350,736,801
Factor Arrows
316,912,267
Factor Arrows
31545,557
Factor Arrows
3171,721

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, 31, 317, 1721

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 31 x 317 x 1,721 = 456,631,209

This can also be written as 33 x 311 x 3171 x 1,7211 = 456,631,209

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


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