Q: Is 261,309 a Prime Number?
A: No, 261,309 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 261309 can be evenly divided by 1 3 87,103 and 261,309, with no remainder.
Since 261,309 cannot be divided by just 1 and 261,309, it is not a prime number.