Q: Is 221,871 a Prime Number?
A: No, 221,871 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 221871 can be evenly divided by 1 3 13 39 5,689 17,067 73,957 and 221,871, with no remainder.
Since 221,871 cannot be divided by just 1 and 221,871, it is not a prime number.