Q: Is 1,780 a Prime Number?
A: No, 1,780 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 1780 can be evenly divided by 1 2 4 5 10 20 89 178 356 445 890 and 1,780, with no remainder.
Since 1,780 cannot be divided by just 1 and 1,780, it is not a prime number.