Q: Is 121,390 a Prime Number?
A: No, 121,390 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 121390 can be evenly divided by 1 2 5 10 61 122 199 305 398 610 995 1,990 12,139 24,278 60,695 and 121,390, with no remainder.
Since 121,390 cannot be divided by just 1 and 121,390, it is not a prime number.