Q: Is 21,712 a Prime Number?
A: No, 21,712 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 21712 can be evenly divided by 1 2 4 8 16 23 46 59 92 118 184 236 368 472 944 1,357 2,714 5,428 10,856 and 21,712, with no remainder.
Since 21,712 cannot be divided by just 1 and 21,712, it is not a prime number.