Q: Is 72,173 a Prime Number?
A: Yes, 72,173 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 72173 can be evenly divided by 1 and 72,173, with no remainder.
Since 72,173 can be divided by just 1 and 72,173, it is a prime number.