Q: Is 321,426 a Prime Number?
A: No, 321,426 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 321426 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 2,551 5,102 7,653 15,306 17,857 22,959 35,714 45,918 53,571 107,142 160,713 and 321,426, with no remainder.
Since 321,426 cannot be divided by just 1 and 321,426, it is not a prime number.