Is 1139 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 1139 is composite or not first we have to find its factors.
Contents
Factors of 1139:
- If we have taken numbers from 1, 2, 3…for checking factors of 1139, we found that 1139 has factors 1, 17, 67 and 1139. Hence, we must say that 1139 is a composite number.
- Thus, 1139 is the composite number.
- If we multiply 1139 by 1, 2, 3 then we get the multiples of 1139 which are 1139, 2278 and so on.
1139 is a Composite number or Prime number
About the number 1139:
- 1139 has more than two factors which are 1, 17, 67 and 1139 and hence it is the composite number.
- 1139 is the odd composite number and it is not the perfect square also.
- If we divide 1139 by 1, 17, 67 and 1139 then we get remainder as zero. Hence, 1, 17, 67 and 1139 are the factors of 1139
Note:
- 1139 is not the perfect square.
- Factors of 1139: 1, 17, 67 and 1139
- Prime factors of 1139: 17, 67
Conclusion:
- 1139 is the composite number which has factors 1, 17, 67 and 1139.
- And hence, 1139 is not the prime number.
Multiple Choice Questions:
1) 1139 is a
a) odd number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 1139 are
a) 1
b) 17, 67
c) 1 and 1139
d) 1, 17, 67 and 1139
Ans: b) 17, 67
3) 1139 is the odd composite number because
a) It has factors 1, 17, 67 and 1139
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c