Q: Is 20,497 a Prime Number?
A: No, 20,497 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 20497 can be evenly divided by 1 103 199 and 20,497, with no remainder.
Since 20,497 cannot be divided by just 1 and 20,497, it is not a prime number.