Q: Is 123,555 a Prime Number?
A: No, 123,555 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 123555 can be evenly divided by 1 3 5 15 8,237 24,711 41,185 and 123,555, with no remainder.
Since 123,555 cannot be divided by just 1 and 123,555, it is not a prime number.