Q: Is 1,320,561 a Prime Number?
A: No, 1,320,561 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 1320561 can be evenly divided by 1 3 9 11 33 99 13,339 40,017 120,051 146,729 440,187 and 1,320,561, with no remainder.
Since 1,320,561 cannot be divided by just 1 and 1,320,561, it is not a prime number.