Q: Is 128,209 a Prime Number?
A: No, 128,209 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 128209 can be evenly divided by 1 29 4,421 and 128,209, with no remainder.
Since 128,209 cannot be divided by just 1 and 128,209, it is not a prime number.