Q: Is 421,018 a Prime Number?
A: No, 421,018 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 421018 can be evenly divided by 1 2 13 26 16,193 32,386 210,509 and 421,018, with no remainder.
Since 421,018 cannot be divided by just 1 and 421,018, it is not a prime number.