Q: Is 72,378 a Prime Number?
A: No, 72,378 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 72378 can be evenly divided by 1 2 3 6 9 18 4,021 8,042 12,063 24,126 36,189 and 72,378, with no remainder.
Since 72,378 cannot be divided by just 1 and 72,378, it is not a prime number.