Q: Is 1,556,001 a Prime Number?
A: No, 1,556,001 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 1556001 can be evenly divided by 1 3 9 83 249 747 2,083 6,249 18,747 172,889 518,667 and 1,556,001, with no remainder.
Since 1,556,001 cannot be divided by just 1 and 1,556,001, it is not a prime number.