Q: Is 421,291 a Prime Number?
A: No, 421,291 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 421291 can be evenly divided by 1 13 23 299 1,409 18,317 32,407 and 421,291, with no remainder.
Since 421,291 cannot be divided by just 1 and 421,291, it is not a prime number.