Q: Is 321,409 a Prime Number?
A: No, 321,409 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 321409 can be evenly divided by 1 11 61 479 671 5,269 29,219 and 321,409, with no remainder.
Since 321,409 cannot be divided by just 1 and 321,409, it is not a prime number.