Q: Is 171,643 a Prime Number?
A: No, 171,643 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 171643 can be evenly divided by 1 37 4,639 and 171,643, with no remainder.
Since 171,643 cannot be divided by just 1 and 171,643, it is not a prime number.