Q: Is 78,438 a Prime Number?
A: No, 78,438 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 78438 can be evenly divided by 1 2 3 6 17 34 51 102 769 1,538 2,307 4,614 13,073 26,146 39,219 and 78,438, with no remainder.
Since 78,438 cannot be divided by just 1 and 78,438, it is not a prime number.