Q: Is 17,720 a Prime Number?
A: No, 17,720 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 17720 can be evenly divided by 1 2 4 5 8 10 20 40 443 886 1,772 2,215 3,544 4,430 8,860 and 17,720, with no remainder.
Since 17,720 cannot be divided by just 1 and 17,720, it is not a prime number.