Q: Is 421,326 a Prime Number?
A: No, 421,326 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 421326 can be evenly divided by 1 2 3 6 9 18 89 178 263 267 526 534 789 801 1,578 1,602 2,367 4,734 23,407 46,814 70,221 140,442 210,663 and 421,326, with no remainder.
Since 421,326 cannot be divided by just 1 and 421,326, it is not a prime number.