Q: Is 1,800 a Prime Number?
A: No, 1,800 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 1800 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 150 180 200 225 300 360 450 600 900 and 1,800, with no remainder.
Since 1,800 cannot be divided by just 1 and 1,800, it is not a prime number.