Q: Is 221,743 a Prime Number?
A: No, 221,743 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 221743 can be evenly divided by 1 23 31 311 713 7,153 9,641 and 221,743, with no remainder.
Since 221,743 cannot be divided by just 1 and 221,743, it is not a prime number.