Q: What are the prime factors of the number 255,557,838?

 A: 2, 3, 17, 41, 53, 1153

Why are those the prime factors of the number 255,557,838?

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 255,557,838

255,557,838
Factor Arrows
2127,778,919
Factor Arrows
342,592,973
Factor Arrows
172,505,469
Factor Arrows
4161,109
Factor Arrows
531,153

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, 17, 41, 53, 1153

We can check our work by multiplying all of the prime factors together: 2 x 3 x 17 x 41 x 53 x 1,153 = 255,557,838

This can also be written as 21 x 31 x 171 x 411 x 531 x 1,1531 = 255,557,838

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


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