Q: Is 12,478 a Prime Number?
A: No, 12,478 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 12478 can be evenly divided by 1 2 17 34 367 734 6,239 and 12,478, with no remainder.
Since 12,478 cannot be divided by just 1 and 12,478, it is not a prime number.