Q: Is 209,428 a Prime Number?
A: No, 209,428 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 209428 can be evenly divided by 1 2 4 41 82 164 1,277 2,554 5,108 52,357 104,714 and 209,428, with no remainder.
Since 209,428 cannot be divided by just 1 and 209,428, it is not a prime number.