Q: Is 21,417 a Prime Number?
A: No, 21,417 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 21417 can be evenly divided by 1 3 11 33 59 121 177 363 649 1,947 7,139 and 21,417, with no remainder.
Since 21,417 cannot be divided by just 1 and 21,417, it is not a prime number.