Q: Is 216,641 a Prime Number?
A: Yes, 216,641 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 216641 can be evenly divided by 1 and 216,641, with no remainder.
Since 216,641 can be divided by just 1 and 216,641, it is a prime number.