Q: Is 15,615 a Prime Number?
A: No, 15,615 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 15615 can be evenly divided by 1 3 5 9 15 45 347 1,041 1,735 3,123 5,205 and 15,615, with no remainder.
Since 15,615 cannot be divided by just 1 and 15,615, it is not a prime number.