Q: Is 12,555 a Prime Number?
A: No, 12,555 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 12555 can be evenly divided by 1 3 5 9 15 27 31 45 81 93 135 155 279 405 465 837 1,395 2,511 4,185 and 12,555, with no remainder.
Since 12,555 cannot be divided by just 1 and 12,555, it is not a prime number.