Q: Is 198,009 a Prime Number?
A: No, 198,009 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 198009 can be evenly divided by 1 3 7 9 21 49 63 147 441 449 1,347 3,143 4,041 9,429 22,001 28,287 66,003 and 198,009, with no remainder.
Since 198,009 cannot be divided by just 1 and 198,009, it is not a prime number.