Q: What are the prime factors of the number 255,250,002?

 A: 2, 3, 7, 17, 1237

Why are those the prime factors of the number 255,250,002?

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 255,250,002

255,250,002
Factor Arrows
2127,625,001
Factor Arrows
342,541,667
Factor Arrows
76,077,381
Factor Arrows
17357,493
Factor Arrows
1721,029
Factor Arrows
171,237

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, 17, 1237

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 17 x 17 x 17 x 1,237 = 255,250,002

This can also be written as 21 x 31 x 71 x 173 x 1,2371 = 255,250,002

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


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