Q: Is 421,001 a Prime Number?
A: No, 421,001 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 421001 can be evenly divided by 1 7 137 439 959 3,073 60,143 and 421,001, with no remainder.
Since 421,001 cannot be divided by just 1 and 421,001, it is not a prime number.