Q: Is 199,857 a Prime Number?
A: No, 199,857 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 199857 can be evenly divided by 1 3 7 21 31 93 217 307 651 921 2,149 6,447 9,517 28,551 66,619 and 199,857, with no remainder.
Since 199,857 cannot be divided by just 1 and 199,857, it is not a prime number.