Q: Is 1,123,521 a Prime Number?
A: No, 1,123,521 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 1123521 can be evenly divided by 1 3 7 21 49 147 7,643 22,929 53,501 160,503 374,507 and 1,123,521, with no remainder.
Since 1,123,521 cannot be divided by just 1 and 1,123,521, it is not a prime number.