Q: Is 20,355 a Prime Number?
A: No, 20,355 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 20355 can be evenly divided by 1 3 5 15 23 59 69 115 177 295 345 885 1,357 4,071 6,785 and 20,355, with no remainder.
Since 20,355 cannot be divided by just 1 and 20,355, it is not a prime number.