Q: Is 1,561,001 a Prime Number?
A: No, 1,561,001 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 1561001 can be evenly divided by 1 13 120,077 and 1,561,001, with no remainder.
Since 1,561,001 cannot be divided by just 1 and 1,561,001, it is not a prime number.