Q: Is 128,217 a Prime Number?
A: No, 128,217 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 128217 can be evenly divided by 1 3 79 237 541 1,623 42,739 and 128,217, with no remainder.
Since 128,217 cannot be divided by just 1 and 128,217, it is not a prime number.