Q: Is 256,004 a Prime Number?

A: No, 256,004 is not a prime number.

Why is 256,004 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 256004 can be evenly divided by 1 2 4 7 14 28 41 82 164 223 287 446 574 892 1,148 1,561 3,122 6,244 9,143 18,286 36,572 64,001 128,002 and 256,004, with no remainder.

Since 256,004 cannot be divided by just 1 and 256,004, it is not a prime number.

Number	256,002	256,003	256,005	256,006
Prime?	no	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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