Q: Is 1,218,508 a Prime Number?
A: No, 1,218,508 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 1218508 can be evenly divided by 1 2 4 19 38 76 16,033 32,066 64,132 304,627 609,254 and 1,218,508, with no remainder.
Since 1,218,508 cannot be divided by just 1 and 1,218,508, it is not a prime number.