Q: What are the prime factors of the number 257,776?

 A: 2, 16111

Why are those the prime factors of the number 257,776?

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 257,776

257,776
Factor Arrows
2128,888
Factor Arrows
264,444
Factor Arrows
232,222
Factor Arrows
216,111

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, 16111

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 16,111 = 257,776

This can also be written as 24 x 16,1111 = 257,776

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


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