Q: Is 100,555 a Prime Number?
A: No, 100,555 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 100555 can be evenly divided by 1 5 7 13 17 35 65 85 91 119 169 221 455 595 845 1,105 1,183 1,547 2,873 5,915 7,735 14,365 20,111 and 100,555, with no remainder.
Since 100,555 cannot be divided by just 1 and 100,555, it is not a prime number.