Q: Is 21,064 a Prime Number?
A: No, 21,064 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 21064 can be evenly divided by 1 2 4 8 2,633 5,266 10,532 and 21,064, with no remainder.
Since 21,064 cannot be divided by just 1 and 21,064, it is not a prime number.