Q: Is 21,827 a Prime Number?
A: No, 21,827 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 21827 can be evenly divided by 1 13 23 73 299 949 1,679 and 21,827, with no remainder.
Since 21,827 cannot be divided by just 1 and 21,827, it is not a prime number.