Q: Is 165,243 a Prime Number?
A: No, 165,243 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 165243 can be evenly divided by 1 3 13 19 39 57 223 247 669 741 2,899 4,237 8,697 12,711 55,081 and 165,243, with no remainder.
Since 165,243 cannot be divided by just 1 and 165,243, it is not a prime number.