Q: What are the prime factors of the number 257,020,126?

 A: 2, 11, 373, 31321

Why are those the prime factors of the number 257,020,126?

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 257,020,126

257,020,126
Factor Arrows
2128,510,063
Factor Arrows
1111,682,733
Factor Arrows
37331,321

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, 11, 373, 31321

We can check our work by multiplying all of the prime factors together: 2 x 11 x 373 x 31,321 = 257,020,126

This can also be written as 21 x 111 x 3731 x 31,3211 = 257,020,126

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


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