Q: Is 280 a Prime Number?
A: No, 280 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 280 can be evenly divided by 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 and 280, with no remainder.
Since 280 cannot be divided by just 1 and 280, it is not a prime number.