Q: What are the prime factors of the number 255,691,368?

 A: 2, 3, 23, 59, 2617

Why are those the prime factors of the number 255,691,368?

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 255,691,368

255,691,368
Factor Arrows
2127,845,684
Factor Arrows
263,922,842
Factor Arrows
231,961,421
Factor Arrows
310,653,807
Factor Arrows
33,551,269
Factor Arrows
23154,403
Factor Arrows
592,617

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, 3, 23, 59, 2617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 23 x 59 x 2,617 = 255,691,368

This can also be written as 23 x 32 x 231 x 591 x 2,6171 = 255,691,368

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


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