Q: What are the prime factors of the number 256,342,064?

 A: 2, 11, 157, 9277

Why are those the prime factors of the number 256,342,064?

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 256,342,064

256,342,064
Factor Arrows
2128,171,032
Factor Arrows
264,085,516
Factor Arrows
232,042,758
Factor Arrows
216,021,379
Factor Arrows
111,456,489
Factor Arrows
1579,277

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, 157, 9277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 157 x 9,277 = 256,342,064

This can also be written as 24 x 111 x 1571 x 9,2771 = 256,342,064

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


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