Q: Is 123,561 a Prime Number?
A: No, 123,561 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 123561 can be evenly divided by 1 3 9 13,729 41,187 and 123,561, with no remainder.
Since 123,561 cannot be divided by just 1 and 123,561, it is not a prime number.