Q: Is 21,847 a Prime Number?
A: No, 21,847 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 21847 can be evenly divided by 1 7 3,121 and 21,847, with no remainder.
Since 21,847 cannot be divided by just 1 and 21,847, it is not a prime number.