Is 1157 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 1157 is composite or not first we have to find its factors.
Contents
Factors of 1157:
- If we have taken numbers from 1, 2, 3…for checking factors of 1157, we found that 1157 has factors 1, 13, 89 and 1157. Hence, we must say that 1157 is a composite number.
- Thus, 1157 is the composite number.
- If we multiply 1157 by 1, 2, 3 then we get the multiples of 1157 which are 1157, 2314 and so on.
1157 is a Composite number or Prime number
About the number 1157:
- 1157 has more than two factors which are 1, 13, 89 and 1157 and hence it is the composite number.
- 1157 is the odd composite number and it is not the perfect square also.
- If we divide 1157 by 1, 13, 89 and 1157 then we get remainder as zero. Hence, 1, 13, 89 and 1157 are the factors of 1157
Note:
- 1157 is not the perfect square.
- Factors of 1157: 1, 13, 89 and 1157
- Prime factors of 1157: 13, 89
Conclusion:
- 1157 is the composite number which has factors 1, 13, 89 and 1157.
- And hence, 1157 is not the prime number.
Multiple Choice Questions:
1) 1157 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 1157 are
a) 1
b) 13, 89
c) 1 and 1157
d) 1, 13, 89 and 1157
Ans: b) 13, 89
3) 1157 is the odd composite number because
a) It has factors 1, 13, 89 and 1157
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c