Q: Is 211,540 a Prime Number?
A: No, 211,540 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 211540 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 70 140 1,511 3,022 6,044 7,555 10,577 15,110 21,154 30,220 42,308 52,885 105,770 and 211,540, with no remainder.
Since 211,540 cannot be divided by just 1 and 211,540, it is not a prime number.