Q: Is 21,199 a Prime Number?
A: No, 21,199 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 21199 can be evenly divided by 1 17 29 43 493 731 1,247 and 21,199, with no remainder.
Since 21,199 cannot be divided by just 1 and 21,199, it is not a prime number.