Q: Is 21,413 a Prime Number?
A: No, 21,413 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 21413 can be evenly divided by 1 7 19 23 49 133 161 437 931 1,127 3,059 and 21,413, with no remainder.
Since 21,413 cannot be divided by just 1 and 21,413, it is not a prime number.