Q: Is 121,355 a Prime Number?
A: No, 121,355 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 121355 can be evenly divided by 1 5 13 65 1,867 9,335 24,271 and 121,355, with no remainder.
Since 121,355 cannot be divided by just 1 and 121,355, it is not a prime number.