Q: Is 133,577 a Prime Number?
A: No, 133,577 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 133577 can be evenly divided by 1 223 599 and 133,577, with no remainder.
Since 133,577 cannot be divided by just 1 and 133,577, it is not a prime number.