Q: Is 155,205 a Prime Number?
A: No, 155,205 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 155205 can be evenly divided by 1 3 5 9 15 45 3,449 10,347 17,245 31,041 51,735 and 155,205, with no remainder.
Since 155,205 cannot be divided by just 1 and 155,205, it is not a prime number.