Q: Is 521,434 a Prime Number?
A: No, 521,434 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 521434 can be evenly divided by 1 2 260,717 and 521,434, with no remainder.
Since 521,434 cannot be divided by just 1 and 521,434, it is not a prime number.