Q: Is 521,228 a Prime Number?
A: No, 521,228 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 521228 can be evenly divided by 1 2 4 130,307 260,614 and 521,228, with no remainder.
Since 521,228 cannot be divided by just 1 and 521,228, it is not a prime number.