Q: Is 20,920 a Prime Number?
A: No, 20,920 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 20920 can be evenly divided by 1 2 4 5 8 10 20 40 523 1,046 2,092 2,615 4,184 5,230 10,460 and 20,920, with no remainder.
Since 20,920 cannot be divided by just 1 and 20,920, it is not a prime number.