Q: Is 21,195 a Prime Number?
A: No, 21,195 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 21195 can be evenly divided by 1 3 5 9 15 27 45 135 157 471 785 1,413 2,355 4,239 7,065 and 21,195, with no remainder.
Since 21,195 cannot be divided by just 1 and 21,195, it is not a prime number.