Q: Is 2,146,561 a Prime Number?
A: Yes, 2,146,561 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2146561 can be evenly divided by 1 and 2,146,561, with no remainder.
Since 2,146,561 can be divided by just 1 and 2,146,561, it is a prime number.