Q: What are the prime factors of the number 255,102,440?

 A: 2, 5, 521, 12241

Why are those the prime factors of the number 255,102,440?

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 255,102,440

255,102,440
Factor Arrows
2127,551,220
Factor Arrows
263,775,610
Factor Arrows
231,887,805
Factor Arrows
56,377,561
Factor Arrows
52112,241

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, 5, 521, 12241

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 521 x 12,241 = 255,102,440

This can also be written as 23 x 51 x 5211 x 12,2411 = 255,102,440

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


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