Q: Is 256,921 a Prime Number?
A: No, 256,921 is 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 256921 can be evenly divided by 1 7 17 119 127 289 889 2,023 2,159 15,113 36,703 and 256,921, with no remainder.
Since 256,921 cannot be divided by just 1 and 256,921, it is not a prime number.