Q: Is 12,820 a Prime Number?
A: No, 12,820 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 12820 can be evenly divided by 1 2 4 5 10 20 641 1,282 2,564 3,205 6,410 and 12,820, with no remainder.
Since 12,820 cannot be divided by just 1 and 12,820, it is not a prime number.