Q: Is 1,218,408 a Prime Number?
A: No, 1,218,408 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 1218408 can be evenly divided by 1 2 3 4 6 8 12 24 50,767 101,534 152,301 203,068 304,602 406,136 609,204 and 1,218,408, with no remainder.
Since 1,218,408 cannot be divided by just 1 and 1,218,408, it is not a prime number.