Q: Is 478,658 a Prime Number?
A: No, 478,658 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 478658 can be evenly divided by 1 2 239,329 and 478,658, with no remainder.
Since 478,658 cannot be divided by just 1 and 478,658, it is not a prime number.