Q: Is 216,513 a Prime Number?
A: No, 216,513 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 216513 can be evenly divided by 1 3 9 11 27 33 81 99 243 297 729 891 2,187 2,673 6,561 8,019 19,683 24,057 72,171 and 216,513, with no remainder.
Since 216,513 cannot be divided by just 1 and 216,513, it is not a prime number.