Q: What are the prime factors of the number 257,601,258?

 A: 2, 3, 29, 31, 15919

Why are those the prime factors of the number 257,601,258?

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 257,601,258

257,601,258
Factor Arrows
2128,800,629
Factor Arrows
342,933,543
Factor Arrows
314,311,181
Factor Arrows
29493,489
Factor Arrows
3115,919

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, 29, 31, 15919

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 29 x 31 x 15,919 = 257,601,258

This can also be written as 21 x 32 x 291 x 311 x 15,9191 = 257,601,258

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


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