Q: Is 215,408 a Prime Number?
A: No, 215,408 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 215408 can be evenly divided by 1 2 4 8 16 13,463 26,926 53,852 107,704 and 215,408, with no remainder.
Since 215,408 cannot be divided by just 1 and 215,408, it is not a prime number.