Q: Is 218,508 a Prime Number?
A: No, 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 218508 can be evenly divided by 1 2 3 4 6 12 131 139 262 278 393 417 524 556 786 834 1,572 1,668 18,209 36,418 54,627 72,836 109,254 and 218,508, with no remainder.
Since 218,508 cannot be divided by just 1 and 218,508, it is not a prime number.