Q: Is 145,821 a Prime Number?
A: No, 145,821 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 145821 can be evenly divided by 1 3 13 39 3,739 11,217 48,607 and 145,821, with no remainder.
Since 145,821 cannot be divided by just 1 and 145,821, it is not a prime number.