Q: What are the prime factors of the number 255,077,424?

 A: 2, 3, 7, 31, 907

Why are those the prime factors of the number 255,077,424?

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 255,077,424

255,077,424
Factor Arrows
2127,538,712
Factor Arrows
263,769,356
Factor Arrows
231,884,678
Factor Arrows
215,942,339
Factor Arrows
35,314,113
Factor Arrows
31,771,371
Factor Arrows
3590,457
Factor Arrows
3196,819
Factor Arrows
728,117
Factor Arrows
31907

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, 7, 31, 907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 7 x 31 x 907 = 255,077,424

This can also be written as 24 x 34 x 71 x 311 x 9071 = 255,077,424

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


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