Q: Is 521,422 a Prime Number?
A: No, 521,422 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 521422 can be evenly divided by 1 2 11 22 137 173 274 346 1,507 1,903 3,014 3,806 23,701 47,402 260,711 and 521,422, with no remainder.
Since 521,422 cannot be divided by just 1 and 521,422, it is not a prime number.