Q: Is 21,265 a Prime Number?
A: No, 21,265 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 21265 can be evenly divided by 1 5 4,253 and 21,265, with no remainder.
Since 21,265 cannot be divided by just 1 and 21,265, it is not a prime number.