Q: Is 21,874 a Prime Number?
A: No, 21,874 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 21874 can be evenly divided by 1 2 10,937 and 21,874, with no remainder.
Since 21,874 cannot be divided by just 1 and 21,874, it is not a prime number.