Q: Is 1,521,204 a Prime Number?
A: No, 1,521,204 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 1521204 can be evenly divided by 1 2 3 4 6 12 109 218 327 436 654 1,163 1,308 2,326 3,489 4,652 6,978 13,956 126,767 253,534 380,301 507,068 760,602 and 1,521,204, with no remainder.
Since 1,521,204 cannot be divided by just 1 and 1,521,204, it is not a prime number.