Is 3115 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 3115 is composite or not first we have to find its factors.
Contents
Factors of 3115:
- If we have taken numbers from 1, 2, 3…for checking factors of 3115, we found that 3115 has factors 1, 5, 7, 35, 89, 445, 623 and 3115. Hence, we must say that 3115 is a composite number.
- Thus, 3115 is the composite number.
- If we multiply 3115 by 1, 2, 3 then we get the multiples of 3115 which are 3115, 6230 and so on.
3115 is a Composite number or Prime number
About the number 3115:
- 3115 has more than two factors which are 1, 5, 7, 35, 89, 445, 623 and 3115 and hence it is the composite number.
- 3115 is the odd composite number and it is not the perfect square also.
- If we divide 3115 by 1, 5, 7, 35, 89, 445, 623 and 3115 then we get remainder as zero. Hence 1, 5, 7, 35, 89, 445, 623 and 3115 are the factors of 3115
Note:
- 3115 is not the perfect square.
- Factors of 3115: 1, 5, 7, 35, 89, 445, 623 and 3115
- Prime factors of 3115: 5, 7, 89
Conclusion:
- 3115 is the composite number which has factors 1, 5, 7, 35, 89, 445, 623 and 3115.
- And hence, 3115 is not the prime number.
Multiple Choice Questions:
1) 3115 is a
a) odd number
b) Prime number
c) even number
d) Both a and c
Ans: a) odd number
2) The non-prime factors of a composite number 3115 are
a) 1
b) 5, 7, 89
c) 1, 5, 7, 35, 89, 445, 623 and 3115
d) 1, 35, 445, 623 and 3115
Ans: d) 1, 35, 445, 623 and 3115
3) 3115 is the odd composite number because
a) It has factors 1, 5, 7, 35, 89, 445, 623 and 3115
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all
Why the below numbers are composite numbers
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