Q: Is 145,173 a Prime Number?
A: No, 145,173 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 145173 can be evenly divided by 1 3 7 21 31 93 217 223 651 669 1,561 4,683 6,913 20,739 48,391 and 145,173, with no remainder.
Since 145,173 cannot be divided by just 1 and 145,173, it is not a prime number.