Q: Is 123,521 a Prime Number?
A: No, 123,521 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 123521 can be evenly divided by 1 149 829 and 123,521, with no remainder.
Since 123,521 cannot be divided by just 1 and 123,521, it is not a prime number.