Q: Is 1,155 a Composite Number?
A: Yes, 1,155 is a composite number.
The number 1,155 can be evenly divided by 1 3 5 7 11 15 21 33 35 55 77 105 165 231 385 and 1,155, with no remainder.
Since 1,155 cannot be divided by just 1 and 1,155, it is a composite number.