Q: Is 1,198,509 a Prime Number?
A: No, 1,198,509 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 1198509 can be evenly divided by 1 3 13 39 79 237 389 1,027 1,167 3,081 5,057 15,171 30,731 92,193 399,503 and 1,198,509, with no remainder.
Since 1,198,509 cannot be divided by just 1 and 1,198,509, it is not a prime number.