Is 2991 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 2991 is composite or not first we have to find its factors.
Contents
Factors of 2991:
- If we have taken numbers from 1, 2, 3…for checking factors of 2991, we found that 2991 has factors 1, 3, 997 and 2991. Hence, we must say that 2991 is a composite number.
- Thus, 2991 is the composite number.
- If we multiply 2991 by 1, 2, 3 then we get the multiples of 2991 which are 2991, 5982 and so on.
2991 is a Composite number or Prime number
About the number 2991:
- 2991 has more than two factors which are 1, 3, 997 and 2991 and hence it is the composite number.
- 2991 is the odd composite number and it is not the perfect square also.
- If we divide 2991 by 1, 3, 997 and 2991 then we get remainder as zero. Hence 1, 3, 997 and 2991 are the factors of 2991
Note:
- 2991 is not the perfect square.
- Factors of 2991: 1, 3, 997 and 2991
- Prime factors of 2991: 3, 997
Conclusion:
- 2991 is the composite number which has factors 1, 3, 997 and 2991.
- And hence, 2991 is not the prime number.
Multiple Choice Questions:
1) 2991 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 2991 are
a) 1
b) 3, 997
c) 1, 3, 997 and 2991
d) 1 and 2991
Ans: d) 1 and 2991
3) 2991 is the odd composite number because
a) It has factors 1, 3, 997 and 2991
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all