Q: Is 81,508 a Prime Number?
A: No, 81,508 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 81508 can be evenly divided by 1 2 4 7 14 28 41 71 82 142 164 284 287 497 574 994 1,148 1,988 2,911 5,822 11,644 20,377 40,754 and 81,508, with no remainder.
Since 81,508 cannot be divided by just 1 and 81,508, it is not a prime number.