Q: Is 133,821 a Prime Number?
A: No, 133,821 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 133821 can be evenly divided by 1 3 9 14,869 44,607 and 133,821, with no remainder.
Since 133,821 cannot be divided by just 1 and 133,821, it is not a prime number.