Q: Is 263,408 a Prime Number?
A: No, 263,408 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 263408 can be evenly divided by 1 2 4 8 16 101 163 202 326 404 652 808 1,304 1,616 2,608 16,463 32,926 65,852 131,704 and 263,408, with no remainder.
Since 263,408 cannot be divided by just 1 and 263,408, it is not a prime number.