Q: Is 121,577 a Prime Number?
A: Yes, 121,577 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 121577 can be evenly divided by 1 and 121,577, with no remainder.
Since 121,577 can be divided by just 1 and 121,577, it is a prime number.