Q: Is 421,311 a Prime Number?
A: No, 421,311 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 421311 can be evenly divided by 1 3 11 17 33 51 187 561 751 2,253 8,261 12,767 24,783 38,301 140,437 and 421,311, with no remainder.
Since 421,311 cannot be divided by just 1 and 421,311, it is not a prime number.