Q: Is 1,521,123 a Prime Number?
A: No, 1,521,123 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 1521123 can be evenly divided by 1 3 271 813 1,871 5,613 507,041 and 1,521,123, with no remainder.
Since 1,521,123 cannot be divided by just 1 and 1,521,123, it is not a prime number.