Q: Is 21,007 a Prime Number?
A: No, 21,007 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 21007 can be evenly divided by 1 7 3,001 and 21,007, with no remainder.
Since 21,007 cannot be divided by just 1 and 21,007, it is not a prime number.