Q: Is 478,215 a Prime Number?
A: No, 478,215 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 478215 can be evenly divided by 1 3 5 9 15 45 10,627 31,881 53,135 95,643 159,405 and 478,215, with no remainder.
Since 478,215 cannot be divided by just 1 and 478,215, it is not a prime number.