Q: What are the prime factors of the number 206,502,464?

 A: 2, 7, 23, 409

Why are those the prime factors of the number 206,502,464?

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 206,502,464

206,502,464
Factor Arrows
2103,251,232
Factor Arrows
251,625,616
Factor Arrows
225,812,808
Factor Arrows
212,906,404
Factor Arrows
26,453,202
Factor Arrows
23,226,601
Factor Arrows
7460,943
Factor Arrows
765,849
Factor Arrows
79,407
Factor Arrows
23409

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, 7, 23, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 7 x 7 x 7 x 23 x 409 = 206,502,464

This can also be written as 26 x 73 x 231 x 4091 = 206,502,464

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


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