Q: Is 145,623 a Prime Number?
A: No, 145,623 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 145623 can be evenly divided by 1 3 48,541 and 145,623, with no remainder.
Since 145,623 cannot be divided by just 1 and 145,623, it is not a prime number.