Q: What are the prime factors of the number 257,577,437?

 A: 13, 23, 47, 18329

Why are those the prime factors of the number 257,577,437?

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 257,577,437

257,577,437
Factor Arrows
1319,813,649
Factor Arrows
23861,463
Factor Arrows
4718,329

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:

13, 23, 47, 18329

We can check our work by multiplying all of the prime factors together: 13 x 23 x 47 x 18,329 = 257,577,437

This can also be written as 131 x 231 x 471 x 18,3291 = 257,577,437

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


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