Q: Is 421,258 a Prime Number?
A: No, 421,258 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 421258 can be evenly divided by 1 2 347 607 694 1,214 210,629 and 421,258, with no remainder.
Since 421,258 cannot be divided by just 1 and 421,258, it is not a prime number.