Q: Is 129,561 a Prime Number?
A: No, 129,561 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 129561 can be evenly divided by 1 3 19 57 2,273 6,819 43,187 and 129,561, with no remainder.
Since 129,561 cannot be divided by just 1 and 129,561, it is not a prime number.