Is 2931 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 2931 is composite or not first we have to find its factors.
Contents
Factors of 2931:
- If we have taken numbers from 1, 2, 3…for checking factors of 2931, we found that 2931 has factors 1, 3, 977 and 2931. Hence, we must say that 2931 is a composite number.
- Thus, 2931 is the composite number.
- If we multiply 2931 by 1, 2, 3 then we get the multiples of 2931 which are 2931, 5862 and so on.
2931 is a Composite number or Prime number
About the number 2931:
- 2931 has more than two factors which are 1, 3, 977 and 2931 and hence it is the composite number.
- 2931 is the odd composite number and it is not the perfect square also.
- If we divide 2931 by 1, 3, 977 and 2931 then we get remainder as zero. Hence 1, 3, 977 and 2931 are the factors of 2931
Note:
- 2931 is not the perfect square.
- Factors of 2931: 1, 3, 977 and 2931
- Prime factors of 2931: 3, 977
Conclusion:
- 2931 is the composite number which has factors 1, 3, 977 and 2931.
- And hence, 2931 is not the prime number.
Multiple Choice Questions:
1) 2931 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 2931 are
a) 1
b) 3, 977
c) 1, 3, 977 and 2931
d) 1 and 2931
Ans: d) 1 and 2931
3) 2931 is the odd composite number because
a) It has factors 1, 3, 977 and 2931
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all