Q: Is 21,497 a Prime Number?
A: No, 21,497 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 21497 can be evenly divided by 1 7 37 83 259 581 3,071 and 21,497, with no remainder.
Since 21,497 cannot be divided by just 1 and 21,497, it is not a prime number.