Q: What are the prime factors of the number 256,362,784?

 A: 2, 23, 29, 12011

Why are those the prime factors of the number 256,362,784?

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 256,362,784

256,362,784
Factor Arrows
2128,181,392
Factor Arrows
264,090,696
Factor Arrows
232,045,348
Factor Arrows
216,022,674
Factor Arrows
28,011,337
Factor Arrows
23348,319
Factor Arrows
2912,011

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, 23, 29, 12011

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 23 x 29 x 12,011 = 256,362,784

This can also be written as 25 x 231 x 291 x 12,0111 = 256,362,784

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


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