Q: Is 145,257 a Prime Number?
A: No, 145,257 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 145257 can be evenly divided by 1 3 7 21 6,917 20,751 48,419 and 145,257, with no remainder.
Since 145,257 cannot be divided by just 1 and 145,257, it is not a prime number.