Q: Is 79,780 a Prime Number?
A: No, 79,780 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 79780 can be evenly divided by 1 2 4 5 10 20 3,989 7,978 15,956 19,945 39,890 and 79,780, with no remainder.
Since 79,780 cannot be divided by just 1 and 79,780, it is not a prime number.