Q: Is 21,460 a Prime Number?
A: No, 21,460 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 21460 can be evenly divided by 1 2 4 5 10 20 29 37 58 74 116 145 148 185 290 370 580 740 1,073 2,146 4,292 5,365 10,730 and 21,460, with no remainder.
Since 21,460 cannot be divided by just 1 and 21,460, it is not a prime number.