Q: Is 243,201 a Prime Number?
A: No, 243,201 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 243201 can be evenly divided by 1 3 7 21 37 111 259 313 777 939 2,191 6,573 11,581 34,743 81,067 and 243,201, with no remainder.
Since 243,201 cannot be divided by just 1 and 243,201, it is not a prime number.