Q: Is 72,165 a Prime Number?
A: No, 72,165 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 72165 can be evenly divided by 1 3 5 15 17 51 85 255 283 849 1,415 4,245 4,811 14,433 24,055 and 72,165, with no remainder.
Since 72,165 cannot be divided by just 1 and 72,165, it is not a prime number.