Q: Is 78,321 a Prime Number?
A: No, 78,321 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 78321 can be evenly divided by 1 3 26,107 and 78,321, with no remainder.
Since 78,321 cannot be divided by just 1 and 78,321, it is not a prime number.