Q: What are the prime factors of the number 256,224,340?

 A: 2, 5, 17, 107, 7043

Why are those the prime factors of the number 256,224,340?

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 256,224,340

256,224,340
Factor Arrows
2128,112,170
Factor Arrows
264,056,085
Factor Arrows
512,811,217
Factor Arrows
17753,601
Factor Arrows
1077,043

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, 5, 17, 107, 7043

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 17 x 107 x 7,043 = 256,224,340

This can also be written as 22 x 51 x 171 x 1071 x 7,0431 = 256,224,340

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


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