Q: Is 340,857 a Prime Number?
A: No, 340,857 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 340857 can be evenly divided by 1 3 9 11 33 99 121 313 363 939 1,089 2,817 3,443 10,329 30,987 37,873 113,619 and 340,857, with no remainder.
Since 340,857 cannot be divided by just 1 and 340,857, it is not a prime number.