Q: Is 645,385 a Prime Number?
A: No, 645,385 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 645385 can be evenly divided by 1 5 13 65 9,929 49,645 129,077 and 645,385, with no remainder.
Since 645,385 cannot be divided by just 1 and 645,385, it is not a prime number.