Q: Is 1,540 a Prime Number?
A: No, 1,540 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 1540 can be evenly divided by 1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 770 and 1,540, with no remainder.
Since 1,540 cannot be divided by just 1 and 1,540, it is not a prime number.