Q: Is 20,615 a Prime Number?
A: No, 20,615 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 20615 can be evenly divided by 1 5 7 19 31 35 95 133 155 217 589 665 1,085 2,945 4,123 and 20,615, with no remainder.
Since 20,615 cannot be divided by just 1 and 20,615, it is not a prime number.