Q: Is 421,513 a Prime Number?
A: No, 421,513 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 421513 can be evenly divided by 1 127 3,319 and 421,513, with no remainder.
Since 421,513 cannot be divided by just 1 and 421,513, it is not a prime number.