Q: Is 378,458 a Prime Number?
A: No, 378,458 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 378458 can be evenly divided by 1 2 189,229 and 378,458, with no remainder.
Since 378,458 cannot be divided by just 1 and 378,458, it is not a prime number.