Q: Is 21,830 a Prime Number?
A: No, 21,830 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 21830 can be evenly divided by 1 2 5 10 37 59 74 118 185 295 370 590 2,183 4,366 10,915 and 21,830, with no remainder.
Since 21,830 cannot be divided by just 1 and 21,830, it is not a prime number.