Q: What are the prime factors of the number 255,225,672?

 A: 2, 3, 13, 257, 1061

Why are those the prime factors of the number 255,225,672?

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 255,225,672

255,225,672
Factor Arrows
2127,612,836
Factor Arrows
263,806,418
Factor Arrows
231,903,209
Factor Arrows
310,634,403
Factor Arrows
33,544,801
Factor Arrows
13272,677
Factor Arrows
2571,061

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, 13, 257, 1061

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 13 x 257 x 1,061 = 255,225,672

This can also be written as 23 x 32 x 131 x 2571 x 1,0611 = 255,225,672

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


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