Q: Is 2,840 a Prime Number?
A: No, 2,840 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 2840 can be evenly divided by 1 2 4 5 8 10 20 40 71 142 284 355 568 710 1,420 and 2,840, with no remainder.
Since 2,840 cannot be divided by just 1 and 2,840, it is not a prime number.