Q: Is 21,164 a Prime Number?
A: No, 21,164 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 21164 can be evenly divided by 1 2 4 11 13 22 26 37 44 52 74 143 148 286 407 481 572 814 962 1,628 1,924 5,291 10,582 and 21,164, with no remainder.
Since 21,164 cannot be divided by just 1 and 21,164, it is not a prime number.