Is 2979 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 2979 is composite or not first we have to find its factors.
Contents
Factors of 2979:
- If we have taken numbers from 1, 2, 3…for checking factors of 2979, we found that 2979 has factors 1, 3, 9, 331, 993 and 2979. Hence, we must say that 2979 is a composite number.
- Thus, 2979 is the composite number.
- If we multiply 2979 by 1, 2, 3 then we get the multiples of 2979 which are 2979, 5958 and so on.
2979 is a Composite number or Prime number
About the number 2979:
- 2979 has more than two factors which are 1, 3, 9, 331, 993 and 2979 and hence it is the composite number.
- 2979 is the odd composite number and it is not the perfect square also.
- If we divide 2979 by 1, 3, 9, 331, 993 and 2979 then we get remainder as zero. Hence 1, 3, 9, 331, 993 and 2979 are the factors of 2979
Note:
- 2979 is not the perfect square.
- Factors of 2979: 1, 3, 9, 331, 993 and 2979
- Prime factors of 2979: 3, 331
Conclusion:
- 2979 is the composite number which has factors 1, 3, 9, 331, 993 and 2979.
- And hence, 2979 is not the prime number.
Multiple Choice Questions:
1) 2979 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 2979 are
a) 1
b) 3, 331
c) 1, 3, 9, 331, 993 and 2979
d) 1, 9, 993 and 2979
Ans: d) 1, 9, 993 and 2979
3) 2979 is the odd composite number because
a) It has factors 1, 3, 9, 331, 993 and 2979
b) It has more than two factors
c) It is not divisible by 2
d) all
Ans: d) all