Q: Is 72,145 a Prime Number?
A: No, 72,145 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 72145 can be evenly divided by 1 5 47 235 307 1,535 14,429 and 72,145, with no remainder.
Since 72,145 cannot be divided by just 1 and 72,145, it is not a prime number.