Q: Is 217,428 a Prime Number?
A: No, 217,428 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 217428 can be evenly divided by 1 2 3 4 6 12 18,119 36,238 54,357 72,476 108,714 and 217,428, with no remainder.
Since 217,428 cannot be divided by just 1 and 217,428, it is not a prime number.