Is 1122 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 1122 is composite or not first we have to find its factors.
Contents
Factors of 1122:
- If we have taken numbers from 1, 2, 3…for checking factors of 1122, we found that 1122 has factors 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122. Hence, we must say that 1122 is a composite number.
- Thus, 1122 is the composite number.
- If we multiply 1122 by 1, 2, 3 then we get the multiples of 1122 which are 1122, 2244 and so on.
About the number 1122:
- 1122 has more than two factors which are 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122 and hence it is the composite number.
- 1122 is the even composite number and it is not the perfect square also.
- If we divide 1122 by 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122 then we get remainder as zero. Hence, 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122 are the factors of 1122.
Note:
- 1122 is not the perfect square.
- Factors of 1122: 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
- Prime factors of 1122: 2, 3, 11, 17
Conclusion:
- 1122 is the composite number which has factors 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
- And hence, 1122 is not the prime number.
Multiple Choice Questions:
1) 1122 is a
a) Even number
b) Not a perfect square number
c) Composite number
d) all
Ans: d) all
2) The composite factors of a composite number 1122 are
a) 6, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
b) 2, 3, 11, 17
c) 1, 6, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
d) 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
Ans: a) 6, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
3) 1122 is composite number because
a) It has factors 1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 102, 187, 374, 561 and 1122
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b