Q: Is 261,278 a Prime Number?
A: No, 261,278 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 261278 can be evenly divided by 1 2 130,639 and 261,278, with no remainder.
Since 261,278 cannot be divided by just 1 and 261,278, it is not a prime number.