Q: Is 340,407 a Prime Number?
A: No, 340,407 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 340407 can be evenly divided by 1 3 9 109 327 347 981 1,041 3,123 37,823 113,469 and 340,407, with no remainder.
Since 340,407 cannot be divided by just 1 and 340,407, it is not a prime number.